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Finding the Fourth Proportional to 439,908.39, 659,874.05 and 140,388.57

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Solution

The fourth proportional to 439,908.39, 659,874.05 and 140,388.57 is: 210,586.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,908.39 : 659,874.05 = 140,388.57 : x
  2. Step 2: Convert to fraction form
    439,908.39/659,874.05 = 140,388.57/x
  3. Step 3: Cross multiply
    439,908.39x = 659,874.05 × 140,388.57
  4. Step 4: Simplify right side
    439,908.39x = 92,638,773,557.67
  5. Step 5: Solve for x
    x = 92,638,773,557.67/439,908.39
  6. Step 6: Final answer
    x = 210,586.51

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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.