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Finding the Fourth Proportional to 278,859.78, 418,584.51 and 173,752.56

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Solution

The fourth proportional to 278,859.78, 418,584.51 and 173,752.56 is: 260,812.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,859.78 : 418,584.51 = 173,752.56 : x
  2. Step 2: Convert to fraction form
    278,859.78/418,584.51 = 173,752.56/x
  3. Step 3: Cross multiply
    278,859.78x = 418,584.51 × 173,752.56
  4. Step 4: Simplify right side
    278,859.78x = 72,730,130,188.85
  5. Step 5: Solve for x
    x = 72,730,130,188.85/278,859.78
  6. Step 6: Final answer
    x = 260,812.55

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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.