Home / 428,720.89-591,658.45-237,730.18

Finding the Fourth Proportional to 428,720.89, 591,658.45 and 237,730.18

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Solution

The fourth proportional to 428,720.89, 591,658.45 and 237,730.18 is: 328,080.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,720.89 : 591,658.45 = 237,730.18 : x
  2. Step 2: Convert to fraction form
    428,720.89/591,658.45 = 237,730.18/x
  3. Step 3: Cross multiply
    428,720.89x = 591,658.45 × 237,730.18
  4. Step 4: Simplify right side
    428,720.89x = 140,655,069,817.02
  5. Step 5: Solve for x
    x = 140,655,069,817.02/428,720.89
  6. Step 6: Final answer
    x = 328,080.75

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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.