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Finding the Fourth Proportional to 279,030.60, 418,545.90 and 267,220.80

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Solution

The fourth proportional to 279,030.60, 418,545.90 and 267,220.80 is: 400,831.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,030.60 : 418,545.90 = 267,220.80 : x
  2. Step 2: Convert to fraction form
    279,030.60/418,545.90 = 267,220.80/x
  3. Step 3: Cross multiply
    279,030.60x = 418,545.90 × 267,220.80
  4. Step 4: Simplify right side
    279,030.60x = 111,844,170,234.72
  5. Step 5: Solve for x
    x = 111,844,170,234.72/279,030.60
  6. Step 6: Final answer
    x = 400,831.20

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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.