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Finding the Fourth Proportional to 439,613.20, 658,107.60 and 262,028.80

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Solution

The fourth proportional to 439,613.20, 658,107.60 and 262,028.80 is: 392,261.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,613.20 : 658,107.60 = 262,028.80 : x
  2. Step 2: Convert to fraction form
    439,613.20/658,107.60 = 262,028.80/x
  3. Step 3: Cross multiply
    439,613.20x = 658,107.60 × 262,028.80
  4. Step 4: Simplify right side
    439,613.20x = 172,443,144,698.88
  5. Step 5: Solve for x
    x = 172,443,144,698.88/439,613.20
  6. Step 6: Final answer
    x = 392,261.07

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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.