Home / 428,719.89-591,657.07-237,729.18

Finding the Fourth Proportional to 428,719.89, 591,657.07 and 237,729.18

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Solution

The fourth proportional to 428,719.89, 591,657.07 and 237,729.18 is: 328,079.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,719.89 : 591,657.07 = 237,729.18 : x
  2. Step 2: Convert to fraction form
    428,719.89/591,657.07 = 237,729.18/x
  3. Step 3: Cross multiply
    428,719.89x = 591,657.07 × 237,729.18
  4. Step 4: Simplify right side
    428,719.89x = 140,654,150,092.30
  5. Step 5: Solve for x
    x = 140,654,150,092.30/428,719.89
  6. Step 6: Final answer
    x = 328,079.37

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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.