Home / 439,122.56-659,565.60-261,975.68

Finding the Fourth Proportional to 439,122.56, 659,565.60 and 261,975.68

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Solution

The fourth proportional to 439,122.56, 659,565.60 and 261,975.68 is: 393,489.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,122.56 : 659,565.60 = 261,975.68 : x
  2. Step 2: Convert to fraction form
    439,122.56/659,565.60 = 261,975.68/x
  3. Step 3: Cross multiply
    439,122.56x = 659,565.60 × 261,975.68
  4. Step 4: Simplify right side
    439,122.56x = 172,790,146,564.61
  5. Step 5: Solve for x
    x = 172,790,146,564.61/439,122.56
  6. Step 6: Final answer
    x = 393,489.57

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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.