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Finding the Fourth Proportional to 203,350.60, 280,623.87 and 112,712.41

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Solution

The fourth proportional to 203,350.60, 280,623.87 and 112,712.41 is: 155,543.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,350.60 : 280,623.87 = 112,712.41 : x
  2. Step 2: Convert to fraction form
    203,350.60/280,623.87 = 112,712.41/x
  3. Step 3: Cross multiply
    203,350.60x = 280,623.87 × 112,712.41
  4. Step 4: Simplify right side
    203,350.60x = 31,629,792,691.23
  5. Step 5: Solve for x
    x = 31,629,792,691.23/203,350.60
  6. Step 6: Final answer
    x = 155,543.15

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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.