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Finding the Fourth Proportional to 325,610.55, 488,415.83 and 115,221.15

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Solution

The fourth proportional to 325,610.55, 488,415.83 and 115,221.15 is: 172,831.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,610.55 : 488,415.83 = 115,221.15 : x
  2. Step 2: Convert to fraction form
    325,610.55/488,415.83 = 115,221.15/x
  3. Step 3: Cross multiply
    325,610.55x = 488,415.83 × 115,221.15
  4. Step 4: Simplify right side
    325,610.55x = 56,275,833,034.70
  5. Step 5: Solve for x
    x = 56,275,833,034.70/325,610.55
  6. Step 6: Final answer
    x = 172,831.73

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Double scale
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Similar ratio
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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.