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Finding the Fourth Proportional to 331,891.80, 498,096.90 and 154,420.80

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Solution

The fourth proportional to 331,891.80, 498,096.90 and 154,420.80 is: 231,751.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,891.80 : 498,096.90 = 154,420.80 : x
  2. Step 2: Convert to fraction form
    331,891.80/498,096.90 = 154,420.80/x
  3. Step 3: Cross multiply
    331,891.80x = 498,096.90 × 154,420.80
  4. Step 4: Simplify right side
    331,891.80x = 76,916,521,775.52
  5. Step 5: Solve for x
    x = 76,916,521,775.52/331,891.80
  6. Step 6: Final answer
    x = 231,751.80

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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.