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Finding the Fourth Proportional to 371,494.76, 512,665.61 and 201,728.88

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Solution

The fourth proportional to 371,494.76, 512,665.61 and 201,728.88 is: 278,387.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,494.76 : 512,665.61 = 201,728.88 : x
  2. Step 2: Convert to fraction form
    371,494.76/512,665.61 = 201,728.88/x
  3. Step 3: Cross multiply
    371,494.76x = 512,665.61 × 201,728.88
  4. Step 4: Simplify right side
    371,494.76x = 103,419,458,311.17
  5. Step 5: Solve for x
    x = 103,419,458,311.17/371,494.76
  6. Step 6: Final answer
    x = 278,387.40

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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.