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Finding the Fourth Proportional to 203,560.96, 280,918.63 and 112,913.97

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Solution

The fourth proportional to 203,560.96, 280,918.63 and 112,913.97 is: 155,823.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,560.96 : 280,918.63 = 112,913.97 : x
  2. Step 2: Convert to fraction form
    203,560.96/280,918.63 = 112,913.97/x
  3. Step 3: Cross multiply
    203,560.96x = 280,918.63 × 112,913.97
  4. Step 4: Simplify right side
    203,560.96x = 31,719,637,760.26
  5. Step 5: Solve for x
    x = 31,719,637,760.26/203,560.96
  6. Step 6: Final answer
    x = 155,823.78

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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.