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Finding the Fourth Proportional to 478,054.20, 717,167.70 and 240,799.80

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Solution

The fourth proportional to 478,054.20, 717,167.70 and 240,799.80 is: 361,243.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,054.20 : 717,167.70 = 240,799.80 : x
  2. Step 2: Convert to fraction form
    478,054.20/717,167.70 = 240,799.80/x
  3. Step 3: Cross multiply
    478,054.20x = 717,167.70 × 240,799.80
  4. Step 4: Simplify right side
    478,054.20x = 172,693,838,726.46
  5. Step 5: Solve for x
    x = 172,693,838,726.46/478,054.20
  6. Step 6: Final answer
    x = 361,243.22

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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.