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Finding the Fourth Proportional to 493,579.71, 740,414.75 and 138,591.34

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Solution

The fourth proportional to 493,579.71, 740,414.75 and 138,591.34 is: 207,899.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,579.71 : 740,414.75 = 138,591.34 : x
  2. Step 2: Convert to fraction form
    493,579.71/740,414.75 = 138,591.34/x
  3. Step 3: Cross multiply
    493,579.71x = 740,414.75 × 138,591.34
  4. Step 4: Simplify right side
    493,579.71x = 102,615,072,358.27
  5. Step 5: Solve for x
    x = 102,615,072,358.27/493,579.71
  6. Step 6: Final answer
    x = 207,899.70

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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.