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Finding the Fourth Proportional to 666,545.15, 999,812.97 and 267,180.12

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Solution

The fourth proportional to 666,545.15, 999,812.97 and 267,180.12 is: 400,768.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,545.15 : 999,812.97 = 267,180.12 : x
  2. Step 2: Convert to fraction form
    666,545.15/999,812.97 = 267,180.12/x
  3. Step 3: Cross multiply
    666,545.15x = 999,812.97 × 267,180.12
  4. Step 4: Simplify right side
    666,545.15x = 267,130,149,302.16
  5. Step 5: Solve for x
    x = 267,130,149,302.16/666,545.15
  6. Step 6: Final answer
    x = 400,768.27

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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.