Home / 428,720.77-591,658.28-237,730.06

Finding the Fourth Proportional to 428,720.77, 591,658.28 and 237,730.06

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Solution

The fourth proportional to 428,720.77, 591,658.28 and 237,730.06 is: 328,080.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,720.77 : 591,658.28 = 237,730.06 : x
  2. Step 2: Convert to fraction form
    428,720.77/591,658.28 = 237,730.06/x
  3. Step 3: Cross multiply
    428,720.77x = 591,658.28 × 237,730.06
  4. Step 4: Simplify right side
    428,720.77x = 140,654,957,519.08
  5. Step 5: Solve for x
    x = 140,654,957,519.08/428,720.77
  6. Step 6: Final answer
    x = 328,080.58

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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.