Home / 486,421.20-729,631.80-153,997.20

Finding the Fourth Proportional to 486,421.20, 729,631.80 and 153,997.20

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Solution

The fourth proportional to 486,421.20, 729,631.80 and 153,997.20 is: 230,995.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,421.20 : 729,631.80 = 153,997.20 : x
  2. Step 2: Convert to fraction form
    486,421.20/729,631.80 = 153,997.20/x
  3. Step 3: Cross multiply
    486,421.20x = 729,631.80 × 153,997.20
  4. Step 4: Simplify right side
    486,421.20x = 112,361,254,230.96
  5. Step 5: Solve for x
    x = 112,361,254,230.96/486,421.20
  6. Step 6: Final answer
    x = 230,995.80

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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.