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Finding the Fourth Proportional to 252,354.50, 378,473.39 and 74,818.70

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Solution

The fourth proportional to 252,354.50, 378,473.39 and 74,818.70 is: 112,210.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,354.50 : 378,473.39 = 74,818.70 : x
  2. Step 2: Convert to fraction form
    252,354.50/378,473.39 = 74,818.70/x
  3. Step 3: Cross multiply
    252,354.50x = 378,473.39 × 74,818.70
  4. Step 4: Simplify right side
    252,354.50x = 28,316,887,024.39
  5. Step 5: Solve for x
    x = 28,316,887,024.39/252,354.50
  6. Step 6: Final answer
    x = 112,210.75

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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.