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Finding the Fourth Proportional to 482,702.43, 666,161.19 and 278,761.92

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Solution

The fourth proportional to 482,702.43, 666,161.19 and 278,761.92 is: 384,709.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,702.43 : 666,161.19 = 278,761.92 : x
  2. Step 2: Convert to fraction form
    482,702.43/666,161.19 = 278,761.92/x
  3. Step 3: Cross multiply
    482,702.43x = 666,161.19 × 278,761.92
  4. Step 4: Simplify right side
    482,702.43x = 185,700,372,353.89
  5. Step 5: Solve for x
    x = 185,700,372,353.89/482,702.43
  6. Step 6: Final answer
    x = 384,709.84

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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.