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Finding the Fourth Proportional to 269,590.86, 404,316.90 and 80,006.31

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Solution

The fourth proportional to 269,590.86, 404,316.90 and 80,006.31 is: 119,988.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,590.86 : 404,316.90 = 80,006.31 : x
  2. Step 2: Convert to fraction form
    269,590.86/404,316.90 = 80,006.31/x
  3. Step 3: Cross multiply
    269,590.86x = 404,316.90 × 80,006.31
  4. Step 4: Simplify right side
    269,590.86x = 32,347,903,239.64
  5. Step 5: Solve for x
    x = 32,347,903,239.64/269,590.86
  6. Step 6: Final answer
    x = 119,988.87

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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.