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Finding the Fourth Proportional to 439,603.80, 659,398.50 and 140,080.29

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Solution

The fourth proportional to 439,603.80, 659,398.50 and 140,080.29 is: 210,118.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,603.80 : 659,398.50 = 140,080.29 : x
  2. Step 2: Convert to fraction form
    439,603.80/659,398.50 = 140,080.29/x
  3. Step 3: Cross multiply
    439,603.80x = 659,398.50 × 140,080.29
  4. Step 4: Simplify right side
    439,603.80x = 92,368,733,105.57
  5. Step 5: Solve for x
    x = 92,368,733,105.57/439,603.80
  6. Step 6: Final answer
    x = 210,118.14

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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.