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Finding the Fourth Proportional to 478,843.20, 717,900.30 and 242,355.60

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Solution

The fourth proportional to 478,843.20, 717,900.30 and 242,355.60 is: 363,348.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,843.20 : 717,900.30 = 242,355.60 : x
  2. Step 2: Convert to fraction form
    478,843.20/717,900.30 = 242,355.60/x
  3. Step 3: Cross multiply
    478,843.20x = 717,900.30 × 242,355.60
  4. Step 4: Simplify right side
    478,843.20x = 173,987,157,946.68
  5. Step 5: Solve for x
    x = 173,987,157,946.68/478,843.20
  6. Step 6: Final answer
    x = 363,348.92

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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.