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Finding the Fourth Proportional to 243,147.43, 335,532.40 and 135,715.11

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Solution

The fourth proportional to 243,147.43, 335,532.40 and 135,715.11 is: 187,280.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,147.43 : 335,532.40 = 135,715.11 : x
  2. Step 2: Convert to fraction form
    243,147.43/335,532.40 = 135,715.11/x
  3. Step 3: Cross multiply
    243,147.43x = 335,532.40 × 135,715.11
  4. Step 4: Simplify right side
    243,147.43x = 45,536,816,574.56
  5. Step 5: Solve for x
    x = 45,536,816,574.56/243,147.43
  6. Step 6: Final answer
    x = 187,280.68

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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.