Home / 485,750.40-727,641.45-275,142.30

Finding the Fourth Proportional to 485,750.40, 727,641.45 and 275,142.30

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Solution

The fourth proportional to 485,750.40, 727,641.45 and 275,142.30 is: 412,156.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,750.40 : 727,641.45 = 275,142.30 : x
  2. Step 2: Convert to fraction form
    485,750.40/727,641.45 = 275,142.30/x
  3. Step 3: Cross multiply
    485,750.40x = 727,641.45 × 275,142.30
  4. Step 4: Simplify right side
    485,750.40x = 200,204,942,128.34
  5. Step 5: Solve for x
    x = 200,204,942,128.34/485,750.40
  6. Step 6: Final answer
    x = 412,156.00

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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.