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Finding the Fourth Proportional to 203,198.76, 280,411.32 and 112,554.43

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Solution

The fourth proportional to 203,198.76, 280,411.32 and 112,554.43 is: 155,323.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,198.76 : 280,411.32 = 112,554.43 : x
  2. Step 2: Convert to fraction form
    203,198.76/280,411.32 = 112,554.43/x
  3. Step 3: Cross multiply
    203,198.76x = 280,411.32 × 112,554.43
  4. Step 4: Simplify right side
    203,198.76x = 31,561,534,886.09
  5. Step 5: Solve for x
    x = 31,561,534,886.09/203,198.76
  6. Step 6: Final answer
    x = 155,323.47

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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.