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Finding the Fourth Proportional to 503,422.90, 755,134.35 and 170,998.90

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Solution

The fourth proportional to 503,422.90, 755,134.35 and 170,998.90 is: 256,498.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,422.90 : 755,134.35 = 170,998.90 : x
  2. Step 2: Convert to fraction form
    503,422.90/755,134.35 = 170,998.90/x
  3. Step 3: Cross multiply
    503,422.90x = 755,134.35 × 170,998.90
  4. Step 4: Simplify right side
    503,422.90x = 129,127,143,202.22
  5. Step 5: Solve for x
    x = 129,127,143,202.22/503,422.90
  6. Step 6: Final answer
    x = 256,498.35

Related Problems

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Half scale
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Double scale
Find fourth proportional to 503,423.90, 755,135.85 and 170,999.90
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.