Home / 858,145.20-1,287,217.80-227,122.80

Finding the Fourth Proportional to 858,145.20, 1,287,217.80 and 227,122.80

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Solution

The fourth proportional to 858,145.20, 1,287,217.80 and 227,122.80 is: 340,684.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,145.20 : 1,287,217.80 = 227,122.80 : x
  2. Step 2: Convert to fraction form
    858,145.20/1,287,217.80 = 227,122.80/x
  3. Step 3: Cross multiply
    858,145.20x = 1,287,217.80 × 227,122.80
  4. Step 4: Simplify right side
    858,145.20x = 292,356,510,945.84
  5. Step 5: Solve for x
    x = 292,356,510,945.84/858,145.20
  6. Step 6: Final answer
    x = 340,684.20

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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.