Home / 858,146.20-1,287,219.30-227,123.80

Finding the Fourth Proportional to 858,146.20, 1,287,219.30 and 227,123.80

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Solution

The fourth proportional to 858,146.20, 1,287,219.30 and 227,123.80 is: 340,685.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,146.20 : 1,287,219.30 = 227,123.80 : x
  2. Step 2: Convert to fraction form
    858,146.20/1,287,219.30 = 227,123.80/x
  3. Step 3: Cross multiply
    858,146.20x = 1,287,219.30 × 227,123.80
  4. Step 4: Simplify right side
    858,146.20x = 292,358,138,849.34
  5. Step 5: Solve for x
    x = 292,358,138,849.34/858,146.20
  6. Step 6: Final answer
    x = 340,685.70

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Double scale
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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.