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Finding the Fourth Proportional to 203,480.91, 280,803.21 and 112,834.62

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Solution

The fourth proportional to 203,480.91, 280,803.21 and 112,834.62 is: 155,711.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,480.91 : 280,803.21 = 112,834.62 : x
  2. Step 2: Convert to fraction form
    203,480.91/280,803.21 = 112,834.62/x
  3. Step 3: Cross multiply
    203,480.91x = 280,803.21 × 112,834.62
  4. Step 4: Simplify right side
    203,480.91x = 31,684,323,072.00
  5. Step 5: Solve for x
    x = 31,684,323,072.00/203,480.91
  6. Step 6: Final answer
    x = 155,711.53

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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.