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Finding the Fourth Proportional to 428,687.91, 591,592.82 and 237,704.49

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Solution

The fourth proportional to 428,687.91, 591,592.82 and 237,704.49 is: 328,034.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,687.91 : 591,592.82 = 237,704.49 : x
  2. Step 2: Convert to fraction form
    428,687.91/591,592.82 = 237,704.49/x
  3. Step 3: Cross multiply
    428,687.91x = 591,592.82 × 237,704.49
  4. Step 4: Simplify right side
    428,687.91x = 140,624,268,377.24
  5. Step 5: Solve for x
    x = 140,624,268,377.24/428,687.91
  6. Step 6: Final answer
    x = 328,034.14

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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.