Home / 728,109.20-1,092,163.80-222,669.20

Finding the Fourth Proportional to 728,109.20, 1,092,163.80 and 222,669.20

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Solution

The fourth proportional to 728,109.20, 1,092,163.80 and 222,669.20 is: 334,003.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,109.20 : 1,092,163.80 = 222,669.20 : x
  2. Step 2: Convert to fraction form
    728,109.20/1,092,163.80 = 222,669.20/x
  3. Step 3: Cross multiply
    728,109.20x = 1,092,163.80 × 222,669.20
  4. Step 4: Simplify right side
    728,109.20x = 243,191,239,614.96
  5. Step 5: Solve for x
    x = 243,191,239,614.96/728,109.20
  6. Step 6: Final answer
    x = 334,003.80

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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.