Home / 827,142.30-1,240,713.45-228,195.90

Finding the Fourth Proportional to 827,142.30, 1,240,713.45 and 228,195.90

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Solution

The fourth proportional to 827,142.30, 1,240,713.45 and 228,195.90 is: 342,293.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,142.30 : 1,240,713.45 = 228,195.90 : x
  2. Step 2: Convert to fraction form
    827,142.30/1,240,713.45 = 228,195.90/x
  3. Step 3: Cross multiply
    827,142.30x = 1,240,713.45 × 228,195.90
  4. Step 4: Simplify right side
    827,142.30x = 283,125,722,364.86
  5. Step 5: Solve for x
    x = 283,125,722,364.86/827,142.30
  6. Step 6: Final answer
    x = 342,293.85

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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.