Home / 457,234.20-685,851.30-207,916.20

Finding the Fourth Proportional to 457,234.20, 685,851.30 and 207,916.20

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Solution

The fourth proportional to 457,234.20, 685,851.30 and 207,916.20 is: 311,874.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,234.20 : 685,851.30 = 207,916.20 : x
  2. Step 2: Convert to fraction form
    457,234.20/685,851.30 = 207,916.20/x
  3. Step 3: Cross multiply
    457,234.20x = 685,851.30 × 207,916.20
  4. Step 4: Simplify right side
    457,234.20x = 142,599,596,061.06
  5. Step 5: Solve for x
    x = 142,599,596,061.06/457,234.20
  6. Step 6: Final answer
    x = 311,874.30

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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.