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Finding the Fourth Proportional to 426,179.79, 639,103.49 and 159,795.15

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Solution

The fourth proportional to 426,179.79, 639,103.49 and 159,795.15 is: 239,630.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,179.79 : 639,103.49 = 159,795.15 : x
  2. Step 2: Convert to fraction form
    426,179.79/639,103.49 = 159,795.15/x
  3. Step 3: Cross multiply
    426,179.79x = 639,103.49 × 159,795.15
  4. Step 4: Simplify right side
    426,179.79x = 102,125,637,251.10
  5. Step 5: Solve for x
    x = 102,125,637,251.10/426,179.79
  6. Step 6: Final answer
    x = 239,630.41

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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.