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Finding the Fourth Proportional to 371,286.12, 512,375.43 and 201,520.32

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Solution

The fourth proportional to 371,286.12, 512,375.43 and 201,520.32 is: 278,098.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,286.12 : 512,375.43 = 201,520.32 : x
  2. Step 2: Convert to fraction form
    371,286.12/512,375.43 = 201,520.32/x
  3. Step 3: Cross multiply
    371,286.12x = 512,375.43 × 201,520.32
  4. Step 4: Simplify right side
    371,286.12x = 103,254,060,613.74
  5. Step 5: Solve for x
    x = 103,254,060,613.74/371,286.12
  6. Step 6: Final answer
    x = 278,098.36

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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.