Home / 428,837.49-591,866.60-237,912.39

Finding the Fourth Proportional to 428,837.49, 591,866.60 and 237,912.39

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Solution

The fourth proportional to 428,837.49, 591,866.60 and 237,912.39 is: 328,358.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,837.49 : 591,866.60 = 237,912.39 : x
  2. Step 2: Convert to fraction form
    428,837.49/591,866.60 = 237,912.39/x
  3. Step 3: Cross multiply
    428,837.49x = 591,866.60 × 237,912.39
  4. Step 4: Simplify right side
    428,837.49x = 140,812,396,177.61
  5. Step 5: Solve for x
    x = 140,812,396,177.61/428,837.49
  6. Step 6: Final answer
    x = 328,358.41

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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.