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Finding the Fourth Proportional to 439,234.60, 658,851.90 and 261,650.20

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Solution

The fourth proportional to 439,234.60, 658,851.90 and 261,650.20 is: 392,475.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,234.60 : 658,851.90 = 261,650.20 : x
  2. Step 2: Convert to fraction form
    439,234.60/658,851.90 = 261,650.20/x
  3. Step 3: Cross multiply
    439,234.60x = 658,851.90 × 261,650.20
  4. Step 4: Simplify right side
    439,234.60x = 172,388,731,405.38
  5. Step 5: Solve for x
    x = 172,388,731,405.38/439,234.60
  6. Step 6: Final answer
    x = 392,475.30

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1.5x scale

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.