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Finding the Fourth Proportional to 485,211.40, 727,817.10 and 169,700.20

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Solution

The fourth proportional to 485,211.40, 727,817.10 and 169,700.20 is: 254,550.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,211.40 : 727,817.10 = 169,700.20 : x
  2. Step 2: Convert to fraction form
    485,211.40/727,817.10 = 169,700.20/x
  3. Step 3: Cross multiply
    485,211.40x = 727,817.10 × 169,700.20
  4. Step 4: Simplify right side
    485,211.40x = 123,510,707,433.42
  5. Step 5: Solve for x
    x = 123,510,707,433.42/485,211.40
  6. Step 6: Final answer
    x = 254,550.30

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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.