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Finding the Fourth Proportional to 275,008.38, 412,630.20 and 115,121.67

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Solution

The fourth proportional to 275,008.38, 412,630.20 and 115,121.67 is: 172,731.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,008.38 : 412,630.20 = 115,121.67 : x
  2. Step 2: Convert to fraction form
    275,008.38/412,630.20 = 115,121.67/x
  3. Step 3: Cross multiply
    275,008.38x = 412,630.20 × 115,121.67
  4. Step 4: Simplify right side
    275,008.38x = 47,502,677,716.43
  5. Step 5: Solve for x
    x = 47,502,677,716.43/275,008.38
  6. Step 6: Final answer
    x = 172,731.75

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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.