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Finding the Fourth Proportional to 203,321.43, 280,570.82 and 112,672.10

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Solution

The fourth proportional to 203,321.43, 280,570.82 and 112,672.10 is: 155,480.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,321.43 : 280,570.82 = 112,672.10 : x
  2. Step 2: Convert to fraction form
    203,321.43/280,570.82 = 112,672.10/x
  3. Step 3: Cross multiply
    203,321.43x = 280,570.82 × 112,672.10
  4. Step 4: Simplify right side
    203,321.43x = 31,612,501,521.91
  5. Step 5: Solve for x
    x = 31,612,501,521.91/203,321.43
  6. Step 6: Final answer
    x = 155,480.42

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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.