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Finding the Fourth Proportional to 503,400.80, 755,218.08 and 166,421.12

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Solution

The fourth proportional to 503,400.80, 755,218.08 and 166,421.12 is: 249,670.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,400.80 : 755,218.08 = 166,421.12 : x
  2. Step 2: Convert to fraction form
    503,400.80/755,218.08 = 166,421.12/x
  3. Step 3: Cross multiply
    503,400.80x = 755,218.08 × 166,421.12
  4. Step 4: Simplify right side
    503,400.80x = 125,684,238,717.85
  5. Step 5: Solve for x
    x = 125,684,238,717.85/503,400.80
  6. Step 6: Final answer
    x = 249,670.32

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Double scale
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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.