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Finding the Fourth Proportional to 270,425.28, 405,646.20 and 92,929.76

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Solution

The fourth proportional to 270,425.28, 405,646.20 and 92,929.76 is: 139,397.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,425.28 : 405,646.20 = 92,929.76 : x
  2. Step 2: Convert to fraction form
    270,425.28/405,646.20 = 92,929.76/x
  3. Step 3: Cross multiply
    270,425.28x = 405,646.20 × 92,929.76
  4. Step 4: Simplify right side
    270,425.28x = 37,696,604,010.91
  5. Step 5: Solve for x
    x = 37,696,604,010.91/270,425.28
  6. Step 6: Final answer
    x = 139,397.49

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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.