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Finding the Fourth Proportional to 439,489.40, 659,234.10 and 262,196.60

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Solution

The fourth proportional to 439,489.40, 659,234.10 and 262,196.60 is: 393,294.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,489.40 : 659,234.10 = 262,196.60 : x
  2. Step 2: Convert to fraction form
    439,489.40/659,234.10 = 262,196.60/x
  3. Step 3: Cross multiply
    439,489.40x = 659,234.10 × 262,196.60
  4. Step 4: Simplify right side
    439,489.40x = 172,848,939,624.06
  5. Step 5: Solve for x
    x = 172,848,939,624.06/439,489.40
  6. Step 6: Final answer
    x = 393,294.90

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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.