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Finding the Fourth Proportional to 203,218.28, 280,437.54 and 112,573.97

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Solution

The fourth proportional to 203,218.28, 280,437.54 and 112,573.97 is: 155,350.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,218.28 : 280,437.54 = 112,573.97 : x
  2. Step 2: Convert to fraction form
    203,218.28/280,437.54 = 112,573.97/x
  3. Step 3: Cross multiply
    203,218.28x = 280,437.54 × 112,573.97
  4. Step 4: Simplify right side
    203,218.28x = 31,569,965,812.65
  5. Step 5: Solve for x
    x = 31,569,965,812.65/203,218.28
  6. Step 6: Final answer
    x = 155,350.03

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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.