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Finding the Fourth Proportional to 203,500.60, 280,830.82 and 112,870.44

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Solution

The fourth proportional to 203,500.60, 280,830.82 and 112,870.44 is: 155,761.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,500.60 : 280,830.82 = 112,870.44 : x
  2. Step 2: Convert to fraction form
    203,500.60/280,830.82 = 112,870.44/x
  3. Step 3: Cross multiply
    203,500.60x = 280,830.82 × 112,870.44
  4. Step 4: Simplify right side
    203,500.60x = 31,697,497,936.78
  5. Step 5: Solve for x
    x = 31,697,497,936.78/203,500.60
  6. Step 6: Final answer
    x = 155,761.20

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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.