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Finding the Fourth Proportional to 203,026.72, 280,169.76 and 112,382.88

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Solution

The fourth proportional to 203,026.72, 280,169.76 and 112,382.88 is: 155,084.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,026.72 : 280,169.76 = 112,382.88 : x
  2. Step 2: Convert to fraction form
    203,026.72/280,169.76 = 112,382.88/x
  3. Step 3: Cross multiply
    203,026.72x = 280,169.76 × 112,382.88
  4. Step 4: Simplify right side
    203,026.72x = 31,486,284,517.71
  5. Step 5: Solve for x
    x = 31,486,284,517.71/203,026.72
  6. Step 6: Final answer
    x = 155,084.44

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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.