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Finding the Fourth Proportional to 428,355.29, 591,133.82 and 237,371.87

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Solution

The fourth proportional to 428,355.29, 591,133.82 and 237,371.87 is: 327,575.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,355.29 : 591,133.82 = 237,371.87 : x
  2. Step 2: Convert to fraction form
    428,355.29/591,133.82 = 237,371.87/x
  3. Step 3: Cross multiply
    428,355.29x = 591,133.82 × 237,371.87
  4. Step 4: Simplify right side
    428,355.29x = 140,318,536,131.12
  5. Step 5: Solve for x
    x = 140,318,536,131.12/428,355.29
  6. Step 6: Final answer
    x = 327,575.13

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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.