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Finding the Fourth Proportional to 478,052.20, 717,164.70 and 240,797.80

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Solution

The fourth proportional to 478,052.20, 717,164.70 and 240,797.80 is: 361,240.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,052.20 : 717,164.70 = 240,797.80 : x
  2. Step 2: Convert to fraction form
    478,052.20/717,164.70 = 240,797.80/x
  3. Step 3: Cross multiply
    478,052.20x = 717,164.70 × 240,797.80
  4. Step 4: Simplify right side
    478,052.20x = 172,691,681,997.66
  5. Step 5: Solve for x
    x = 172,691,681,997.66/478,052.20
  6. Step 6: Final answer
    x = 361,240.22

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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.