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Finding the Fourth Proportional to 252,600.79, 378,963.96 and 75,107.53

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Solution

The fourth proportional to 252,600.79, 378,963.96 and 75,107.53 is: 112,679.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,600.79 : 378,963.96 = 75,107.53 : x
  2. Step 2: Convert to fraction form
    252,600.79/378,963.96 = 75,107.53/x
  3. Step 3: Cross multiply
    252,600.79x = 378,963.96 × 75,107.53
  4. Step 4: Simplify right side
    252,600.79x = 28,463,046,994.62
  5. Step 5: Solve for x
    x = 28,463,046,994.62/252,600.79
  6. Step 6: Final answer
    x = 112,679.96

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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.