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Finding the Fourth Proportional to 454,003.10, 626,469.42 and 260,400.78

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Solution

The fourth proportional to 454,003.10, 626,469.42 and 260,400.78 is: 359,321.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,003.10 : 626,469.42 = 260,400.78 : x
  2. Step 2: Convert to fraction form
    454,003.10/626,469.42 = 260,400.78/x
  3. Step 3: Cross multiply
    454,003.10x = 626,469.42 × 260,400.78
  4. Step 4: Simplify right side
    454,003.10x = 163,133,122,481.80
  5. Step 5: Solve for x
    x = 163,133,122,481.80/454,003.10
  6. Step 6: Final answer
    x = 359,321.61

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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.