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Finding the Fourth Proportional to 428,953.56, 591,956.61 and 237,966.96

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Solution

The fourth proportional to 428,953.56, 591,956.61 and 237,966.96 is: 328,394.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,953.56 : 591,956.61 = 237,966.96 : x
  2. Step 2: Convert to fraction form
    428,953.56/591,956.61 = 237,966.96/x
  3. Step 3: Cross multiply
    428,953.56x = 591,956.61 × 237,966.96
  4. Step 4: Simplify right side
    428,953.56x = 140,866,114,933.61
  5. Step 5: Solve for x
    x = 140,866,114,933.61/428,953.56
  6. Step 6: Final answer
    x = 328,394.79

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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.