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Finding the Fourth Proportional to 243,253.12, 335,685.82 and 135,824.84

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Solution

The fourth proportional to 243,253.12, 335,685.82 and 135,824.84 is: 187,436.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,253.12 : 335,685.82 = 135,824.84 : x
  2. Step 2: Convert to fraction form
    243,253.12/335,685.82 = 135,824.84/x
  3. Step 3: Cross multiply
    243,253.12x = 335,685.82 × 135,824.84
  4. Step 4: Simplify right side
    243,253.12x = 45,594,472,791.77
  5. Step 5: Solve for x
    x = 45,594,472,791.77/243,253.12
  6. Step 6: Final answer
    x = 187,436.33

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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.