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Finding the Fourth Proportional to 243,308.38, 335,716.86 and 135,861.88

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Solution

The fourth proportional to 243,308.38, 335,716.86 and 135,861.88 is: 187,462.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,308.38 : 335,716.86 = 135,861.88 : x
  2. Step 2: Convert to fraction form
    243,308.38/335,716.86 = 135,861.88/x
  3. Step 3: Cross multiply
    243,308.38x = 335,716.86 × 135,861.88
  4. Step 4: Simplify right side
    243,308.38x = 45,611,123,417.49
  5. Step 5: Solve for x
    x = 45,611,123,417.49/243,308.38
  6. Step 6: Final answer
    x = 187,462.20

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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.