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Finding the Fourth Proportional to 428,672.39, 591,594.03 and 237,685.73

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Solution

The fourth proportional to 428,672.39, 591,594.03 and 237,685.73 is: 328,020.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,672.39 : 591,594.03 = 237,685.73 : x
  2. Step 2: Convert to fraction form
    428,672.39/591,594.03 = 237,685.73/x
  3. Step 3: Cross multiply
    428,672.39x = 591,594.03 × 237,685.73
  4. Step 4: Simplify right side
    428,672.39x = 140,613,455,926.22
  5. Step 5: Solve for x
    x = 140,613,455,926.22/428,672.39
  6. Step 6: Final answer
    x = 328,020.79

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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.