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Finding the Fourth Proportional to 484,318.26, 668,348.78 and 280,377.81

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Solution

The fourth proportional to 484,318.26, 668,348.78 and 280,377.81 is: 386,915.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,318.26 : 668,348.78 = 280,377.81 : x
  2. Step 2: Convert to fraction form
    484,318.26/668,348.78 = 280,377.81/x
  3. Step 3: Cross multiply
    484,318.26x = 668,348.78 × 280,377.81
  4. Step 4: Simplify right side
    484,318.26x = 187,390,165,850.68
  5. Step 5: Solve for x
    x = 187,390,165,850.68/484,318.26
  6. Step 6: Final answer
    x = 386,915.34

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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.