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Finding the Fourth Proportional to 428,861.52, 591,825 and 237,875.28

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Solution

The fourth proportional to 428,861.52, 591,825 and 237,875.28 is: 328,265.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,861.52 : 591,825 = 237,875.28 : x
  2. Step 2: Convert to fraction form
    428,861.52/591,825 = 237,875.28/x
  3. Step 3: Cross multiply
    428,861.52x = 591,825 × 237,875.28
  4. Step 4: Simplify right side
    428,861.52x = 140,780,537,586
  5. Step 5: Solve for x
    x = 140,780,537,586/428,861.52
  6. Step 6: Final answer
    x = 328,265.72

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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.