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Finding the Fourth Proportional to 478,001.09, 717,251.52 and 193,721.87

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Solution

The fourth proportional to 478,001.09, 717,251.52 and 193,721.87 is: 290,684.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,001.09 : 717,251.52 = 193,721.87 : x
  2. Step 2: Convert to fraction form
    478,001.09/717,251.52 = 193,721.87/x
  3. Step 3: Cross multiply
    478,001.09x = 717,251.52 × 193,721.87
  4. Step 4: Simplify right side
    478,001.09x = 138,947,305,714.74
  5. Step 5: Solve for x
    x = 138,947,305,714.74/478,001.09
  6. Step 6: Final answer
    x = 290,684.08

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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.