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Finding the Fourth Proportional to 203,600.98, 305,253.85 and 136,875.70

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Solution

The fourth proportional to 203,600.98, 305,253.85 and 136,875.70 is: 205,214.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,600.98 : 305,253.85 = 136,875.70 : x
  2. Step 2: Convert to fraction form
    203,600.98/305,253.85 = 136,875.70/x
  3. Step 3: Cross multiply
    203,600.98x = 305,253.85 × 136,875.70
  4. Step 4: Simplify right side
    203,600.98x = 41,781,834,396.45
  5. Step 5: Solve for x
    x = 41,781,834,396.45/203,600.98
  6. Step 6: Final answer
    x = 205,214.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.