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Finding the Fourth Proportional to 321,706.20, 482,559.30 and 121,960.20

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Solution

The fourth proportional to 321,706.20, 482,559.30 and 121,960.20 is: 182,940.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,706.20 : 482,559.30 = 121,960.20 : x
  2. Step 2: Convert to fraction form
    321,706.20/482,559.30 = 121,960.20/x
  3. Step 3: Cross multiply
    321,706.20x = 482,559.30 × 121,960.20
  4. Step 4: Simplify right side
    321,706.20x = 58,853,028,739.86
  5. Step 5: Solve for x
    x = 58,853,028,739.86/321,706.20
  6. Step 6: Final answer
    x = 182,940.30

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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.