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Finding the Fourth Proportional to 203,511.28, 280,847.62 and 112,868.64

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Solution

The fourth proportional to 203,511.28, 280,847.62 and 112,868.64 is: 155,759.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,511.28 : 280,847.62 = 112,868.64 : x
  2. Step 2: Convert to fraction form
    203,511.28/280,847.62 = 112,868.64/x
  3. Step 3: Cross multiply
    203,511.28x = 280,847.62 × 112,868.64
  4. Step 4: Simplify right side
    203,511.28x = 31,698,888,916.64
  5. Step 5: Solve for x
    x = 31,698,888,916.64/203,511.28
  6. Step 6: Final answer
    x = 155,759.86

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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.