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Finding the Fourth Proportional to 203,243.20, 280,471.84 and 112,598.88

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Solution

The fourth proportional to 203,243.20, 280,471.84 and 112,598.88 is: 155,384.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,243.20 : 280,471.84 = 112,598.88 : x
  2. Step 2: Convert to fraction form
    203,243.20/280,471.84 = 112,598.88/x
  3. Step 3: Cross multiply
    203,243.20x = 280,471.84 × 112,598.88
  4. Step 4: Simplify right side
    203,243.20x = 31,580,815,055.54
  5. Step 5: Solve for x
    x = 31,580,815,055.54/203,243.20
  6. Step 6: Final answer
    x = 155,384.36

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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.