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Finding the Fourth Proportional to 486,608.20, 729,912.30 and 154,184.20

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Solution

The fourth proportional to 486,608.20, 729,912.30 and 154,184.20 is: 231,276.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,608.20 : 729,912.30 = 154,184.20 : x
  2. Step 2: Convert to fraction form
    486,608.20/729,912.30 = 154,184.20/x
  3. Step 3: Cross multiply
    486,608.20x = 729,912.30 × 154,184.20
  4. Step 4: Simplify right side
    486,608.20x = 112,540,944,045.66
  5. Step 5: Solve for x
    x = 112,540,944,045.66/486,608.20
  6. Step 6: Final answer
    x = 231,276.30

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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.