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Finding the Fourth Proportional to 426,180.54, 639,104.61 and 159,795.90

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Solution

The fourth proportional to 426,180.54, 639,104.61 and 159,795.90 is: 239,631.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,180.54 : 639,104.61 = 159,795.90 : x
  2. Step 2: Convert to fraction form
    426,180.54/639,104.61 = 159,795.90/x
  3. Step 3: Cross multiply
    426,180.54x = 639,104.61 × 159,795.90
  4. Step 4: Simplify right side
    426,180.54x = 102,126,296,349.10
  5. Step 5: Solve for x
    x = 102,126,296,349.10/426,180.54
  6. Step 6: Final answer
    x = 239,631.53

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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.