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Finding the Fourth Proportional to 240,689.76, 361,145.25 and 90,982.05

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Solution

The fourth proportional to 240,689.76, 361,145.25 and 90,982.05 is: 136,514.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,689.76 : 361,145.25 = 90,982.05 : x
  2. Step 2: Convert to fraction form
    240,689.76/361,145.25 = 90,982.05/x
  3. Step 3: Cross multiply
    240,689.76x = 361,145.25 × 90,982.05
  4. Step 4: Simplify right side
    240,689.76x = 32,857,735,192.76
  5. Step 5: Solve for x
    x = 32,857,735,192.76/240,689.76
  6. Step 6: Final answer
    x = 136,514.89

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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.