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Finding the Fourth Proportional to 371,195.76, 512,244.72 and 218,251.20

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Solution

The fourth proportional to 371,195.76, 512,244.72 and 218,251.20 is: 301,183.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,195.76 : 512,244.72 = 218,251.20 : x
  2. Step 2: Convert to fraction form
    371,195.76/512,244.72 = 218,251.20/x
  3. Step 3: Cross multiply
    371,195.76x = 512,244.72 × 218,251.20
  4. Step 4: Simplify right side
    371,195.76x = 111,798,024,833.66
  5. Step 5: Solve for x
    x = 111,798,024,833.66/371,195.76
  6. Step 6: Final answer
    x = 301,183.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.