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Finding the Fourth Proportional to 478,778.60, 718,272.96 and 141,845.60

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Solution

The fourth proportional to 478,778.60, 718,272.96 and 141,845.60 is: 212,799.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,778.60 : 718,272.96 = 141,845.60 : x
  2. Step 2: Convert to fraction form
    478,778.60/718,272.96 = 141,845.60/x
  3. Step 3: Cross multiply
    478,778.60x = 718,272.96 × 141,845.60
  4. Step 4: Simplify right side
    478,778.60x = 101,883,858,974.98
  5. Step 5: Solve for x
    x = 101,883,858,974.98/478,778.60
  6. Step 6: Final answer
    x = 212,799.53

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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.