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Finding the Fourth Proportional to 201,524.55, 278,143.65 and 115,541.30

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Solution

The fourth proportional to 201,524.55, 278,143.65 and 115,541.30 is: 159,469.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,524.55 : 278,143.65 = 115,541.30 : x
  2. Step 2: Convert to fraction form
    201,524.55/278,143.65 = 115,541.30/x
  3. Step 3: Cross multiply
    201,524.55x = 278,143.65 × 115,541.30
  4. Step 4: Simplify right side
    201,524.55x = 32,137,077,517.03
  5. Step 5: Solve for x
    x = 32,137,077,517.03/201,524.55
  6. Step 6: Final answer
    x = 159,469.79

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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.