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Finding the Fourth Proportional to 215,422.74, 297,089.84 and 134,857.60

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Solution

The fourth proportional to 215,422.74, 297,089.84 and 134,857.60 is: 185,982.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,422.74 : 297,089.84 = 134,857.60 : x
  2. Step 2: Convert to fraction form
    215,422.74/297,089.84 = 134,857.60/x
  3. Step 3: Cross multiply
    215,422.74x = 297,089.84 × 134,857.60
  4. Step 4: Simplify right side
    215,422.74x = 40,064,822,806.78
  5. Step 5: Solve for x
    x = 40,064,822,806.78/215,422.74
  6. Step 6: Final answer
    x = 185,982.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.