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Finding the Fourth Proportional to 331,555.80, 497,005.65 and 162,938.10

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Solution

The fourth proportional to 331,555.80, 497,005.65 and 162,938.10 is: 244,245.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,555.80 : 497,005.65 = 162,938.10 : x
  2. Step 2: Convert to fraction form
    331,555.80/497,005.65 = 162,938.10/x
  3. Step 3: Cross multiply
    331,555.80x = 497,005.65 × 162,938.10
  4. Step 4: Simplify right side
    331,555.80x = 80,981,156,300.27
  5. Step 5: Solve for x
    x = 80,981,156,300.27/331,555.80
  6. Step 6: Final answer
    x = 244,245.93

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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.