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Finding the Fourth Proportional to 252,311.60, 378,402.88 and 74,777.20

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Solution

The fourth proportional to 252,311.60, 378,402.88 and 74,777.20 is: 112,146.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,311.60 : 378,402.88 = 74,777.20 : x
  2. Step 2: Convert to fraction form
    252,311.60/378,402.88 = 74,777.20/x
  3. Step 3: Cross multiply
    252,311.60x = 378,402.88 × 74,777.20
  4. Step 4: Simplify right side
    252,311.60x = 28,295,907,838.34
  5. Step 5: Solve for x
    x = 28,295,907,838.34/252,311.60
  6. Step 6: Final answer
    x = 112,146.68

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.