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Finding the Fourth Proportional to 426,160.80, 639,074.94 and 159,775.92

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Solution

The fourth proportional to 426,160.80, 639,074.94 and 159,775.92 is: 239,601.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,160.80 : 639,074.94 = 159,775.92 : x
  2. Step 2: Convert to fraction form
    426,160.80/639,074.94 = 159,775.92/x
  3. Step 3: Cross multiply
    426,160.80x = 639,074.94 × 159,775.92
  4. Step 4: Simplify right side
    426,160.80x = 102,108,786,487.45
  5. Step 5: Solve for x
    x = 102,108,786,487.45/426,160.80
  6. Step 6: Final answer
    x = 239,601.55

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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.