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Finding the Fourth Proportional to 439,298.72, 658,195.82 and 239,759.12

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Solution

The fourth proportional to 439,298.72, 658,195.82 and 239,759.12 is: 359,228.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,298.72 : 658,195.82 = 239,759.12 : x
  2. Step 2: Convert to fraction form
    439,298.72/658,195.82 = 239,759.12/x
  3. Step 3: Cross multiply
    439,298.72x = 658,195.82 × 239,759.12
  4. Step 4: Simplify right side
    439,298.72x = 157,808,446,101.10
  5. Step 5: Solve for x
    x = 157,808,446,101.10/439,298.72
  6. Step 6: Final answer
    x = 359,228.11

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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.