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Finding the Fourth Proportional to 243,491.76, 335,996.78 and 136,046.88

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Solution

The fourth proportional to 243,491.76, 335,996.78 and 136,046.88 is: 187,732.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,491.76 : 335,996.78 = 136,046.88 : x
  2. Step 2: Convert to fraction form
    243,491.76/335,996.78 = 136,046.88/x
  3. Step 3: Cross multiply
    243,491.76x = 335,996.78 × 136,046.88
  4. Step 4: Simplify right side
    243,491.76x = 45,711,312,928.81
  5. Step 5: Solve for x
    x = 45,711,312,928.81/243,491.76
  6. Step 6: Final answer
    x = 187,732.48

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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.