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Finding the Fourth Proportional to 337,540.70, 506,421.92 and 138,028.89

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Solution

The fourth proportional to 337,540.70, 506,421.92 and 138,028.89 is: 207,088.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    337,540.70 : 506,421.92 = 138,028.89 : x
  2. Step 2: Convert to fraction form
    337,540.70/506,421.92 = 138,028.89/x
  3. Step 3: Cross multiply
    337,540.70x = 506,421.92 × 138,028.89
  4. Step 4: Simplify right side
    337,540.70x = 69,900,857,733.42
  5. Step 5: Solve for x
    x = 69,900,857,733.42/337,540.70
  6. Step 6: Final answer
    x = 207,088.68

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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.