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Finding the Fourth Proportional to 486,812.43, 671,806.71 and 269,020.17

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Solution

The fourth proportional to 486,812.43, 671,806.71 and 269,020.17 is: 371,250.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,812.43 : 671,806.71 = 269,020.17 : x
  2. Step 2: Convert to fraction form
    486,812.43/671,806.71 = 269,020.17/x
  3. Step 3: Cross multiply
    486,812.43x = 671,806.71 × 269,020.17
  4. Step 4: Simplify right side
    486,812.43x = 180,729,555,331.34
  5. Step 5: Solve for x
    x = 180,729,555,331.34/486,812.43
  6. Step 6: Final answer
    x = 371,250.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.