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Finding the Fourth Proportional to 457,324.80, 685,987.20 and 124,900.80

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Solution

The fourth proportional to 457,324.80, 685,987.20 and 124,900.80 is: 187,351.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,324.80 : 685,987.20 = 124,900.80 : x
  2. Step 2: Convert to fraction form
    457,324.80/685,987.20 = 124,900.80/x
  3. Step 3: Cross multiply
    457,324.80x = 685,987.20 × 124,900.80
  4. Step 4: Simplify right side
    457,324.80x = 85,680,350,069.76
  5. Step 5: Solve for x
    x = 85,680,350,069.76/457,324.80
  6. Step 6: Final answer
    x = 187,351.20

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.