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Finding the Fourth Proportional to 439,479.96, 659,239.09 and 215,029.37

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Solution

The fourth proportional to 439,479.96, 659,239.09 and 215,029.37 is: 322,553.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,479.96 : 659,239.09 = 215,029.37 : x
  2. Step 2: Convert to fraction form
    439,479.96/659,239.09 = 215,029.37/x
  3. Step 3: Cross multiply
    439,479.96x = 659,239.09 × 215,029.37
  4. Step 4: Simplify right side
    439,479.96x = 141,755,762,368.30
  5. Step 5: Solve for x
    x = 141,755,762,368.30/439,479.96
  6. Step 6: Final answer
    x = 322,553.42

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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.