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Finding the Fourth Proportional to 252,490.52, 378,739.19 and 84,010.87

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Solution

The fourth proportional to 252,490.52, 378,739.19 and 84,010.87 is: 126,017.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,490.52 : 378,739.19 = 84,010.87 : x
  2. Step 2: Convert to fraction form
    252,490.52/378,739.19 = 84,010.87/x
  3. Step 3: Cross multiply
    252,490.52x = 378,739.19 × 84,010.87
  4. Step 4: Simplify right side
    252,490.52x = 31,818,209,538.45
  5. Step 5: Solve for x
    x = 31,818,209,538.45/252,490.52
  6. Step 6: Final answer
    x = 126,017.44

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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.