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Finding the Fourth Proportional to 252,307.60, 378,396.88 and 74,773.20

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Solution

The fourth proportional to 252,307.60, 378,396.88 and 74,773.20 is: 112,140.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,307.60 : 378,396.88 = 74,773.20 : x
  2. Step 2: Convert to fraction form
    252,307.60/378,396.88 = 74,773.20/x
  3. Step 3: Cross multiply
    252,307.60x = 378,396.88 × 74,773.20
  4. Step 4: Simplify right side
    252,307.60x = 28,293,945,587.62
  5. Step 5: Solve for x
    x = 28,293,945,587.62/252,307.60
  6. Step 6: Final answer
    x = 112,140.68

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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.