Home / 486,590.20-729,885.30-154,166.20

Finding the Fourth Proportional to 486,590.20, 729,885.30 and 154,166.20

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Solution

The fourth proportional to 486,590.20, 729,885.30 and 154,166.20 is: 231,249.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,590.20 : 729,885.30 = 154,166.20 : x
  2. Step 2: Convert to fraction form
    486,590.20/729,885.30 = 154,166.20/x
  3. Step 3: Cross multiply
    486,590.20x = 729,885.30 × 154,166.20
  4. Step 4: Simplify right side
    486,590.20x = 112,523,643,136.86
  5. Step 5: Solve for x
    x = 112,523,643,136.86/486,590.20
  6. Step 6: Final answer
    x = 231,249.30

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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.