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Finding the Fourth Proportional to 203,479.04, 280,793.28 and 112,838.72

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Solution

The fourth proportional to 203,479.04, 280,793.28 and 112,838.72 is: 155,713.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,479.04 : 280,793.28 = 112,838.72 : x
  2. Step 2: Convert to fraction form
    203,479.04/280,793.28 = 112,838.72/x
  3. Step 3: Cross multiply
    203,479.04x = 280,793.28 × 112,838.72
  4. Step 4: Simplify right side
    203,479.04x = 31,684,354,299.80
  5. Step 5: Solve for x
    x = 31,684,354,299.80/203,479.04
  6. Step 6: Final answer
    x = 155,713.11

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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.