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Finding the Fourth Proportional to 493,470.08, 740,145.28 and 138,512.64

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Solution

The fourth proportional to 493,470.08, 740,145.28 and 138,512.64 is: 207,752.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,470.08 : 740,145.28 = 138,512.64 : x
  2. Step 2: Convert to fraction form
    493,470.08/740,145.28 = 138,512.64/x
  3. Step 3: Cross multiply
    493,470.08x = 740,145.28 × 138,512.64
  4. Step 4: Simplify right side
    493,470.08x = 102,519,476,716.34
  5. Step 5: Solve for x
    x = 102,519,476,716.34/493,470.08
  6. Step 6: Final answer
    x = 207,752.16

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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.