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Finding the Fourth Proportional to 252,713.10, 378,942.87 and 84,174.18

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Solution

The fourth proportional to 252,713.10, 378,942.87 and 84,174.18 is: 126,219.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,713.10 : 378,942.87 = 84,174.18 : x
  2. Step 2: Convert to fraction form
    252,713.10/378,942.87 = 84,174.18/x
  3. Step 3: Cross multiply
    252,713.10x = 378,942.87 × 84,174.18
  4. Step 4: Simplify right side
    252,713.10x = 31,897,205,349.10
  5. Step 5: Solve for x
    x = 31,897,205,349.10/252,713.10
  6. Step 6: Final answer
    x = 126,219.04

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1.5x scale

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.