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Finding the Fourth Proportional to 203,418.57, 280,724.46 and 112,769.13

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Solution

The fourth proportional to 203,418.57, 280,724.46 and 112,769.13 is: 155,625.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,418.57 : 280,724.46 = 112,769.13 : x
  2. Step 2: Convert to fraction form
    203,418.57/280,724.46 = 112,769.13/x
  3. Step 3: Cross multiply
    203,418.57x = 280,724.46 × 112,769.13
  4. Step 4: Simplify right side
    203,418.57x = 31,657,053,123.92
  5. Step 5: Solve for x
    x = 31,657,053,123.92/203,418.57
  6. Step 6: Final answer
    x = 155,625.19

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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.