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Finding the Fourth Proportional to 243,061.56, 335,422.62 and 135,628.92

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Solution

The fourth proportional to 243,061.56, 335,422.62 and 135,628.92 is: 187,166.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,061.56 : 335,422.62 = 135,628.92 : x
  2. Step 2: Convert to fraction form
    243,061.56/335,422.62 = 135,628.92/x
  3. Step 3: Cross multiply
    243,061.56x = 335,422.62 × 135,628.92
  4. Step 4: Simplify right side
    243,061.56x = 45,493,007,694.17
  5. Step 5: Solve for x
    x = 45,493,007,694.17/243,061.56
  6. Step 6: Final answer
    x = 187,166.61

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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.