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Finding the Fourth Proportional to 325,635.90, 488,458.89 and 115,126.62

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Solution

The fourth proportional to 325,635.90, 488,458.89 and 115,126.62 is: 172,691.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,635.90 : 488,458.89 = 115,126.62 : x
  2. Step 2: Convert to fraction form
    325,635.90/488,458.89 = 115,126.62/x
  3. Step 3: Cross multiply
    325,635.90x = 488,458.89 × 115,126.62
  4. Step 4: Simplify right side
    325,635.90x = 56,234,621,014.65
  5. Step 5: Solve for x
    x = 56,234,621,014.65/325,635.90
  6. Step 6: Final answer
    x = 172,691.71

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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.