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Finding the Fourth Proportional to 243,251.52, 335,692.80 and 135,817.92

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Solution

The fourth proportional to 243,251.52, 335,692.80 and 135,817.92 is: 187,431.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,251.52 : 335,692.80 = 135,817.92 : x
  2. Step 2: Convert to fraction form
    243,251.52/335,692.80 = 135,817.92/x
  3. Step 3: Cross multiply
    243,251.52x = 335,692.80 × 135,817.92
  4. Step 4: Simplify right side
    243,251.52x = 45,593,097,854.98
  5. Step 5: Solve for x
    x = 45,593,097,854.98/243,251.52
  6. Step 6: Final answer
    x = 187,431.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.