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Finding the Fourth Proportional to 203,367.60, 305,137.80 and 98,132.40

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Solution

The fourth proportional to 203,367.60, 305,137.80 and 98,132.40 is: 147,240.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,367.60 : 305,137.80 = 98,132.40 : x
  2. Step 2: Convert to fraction form
    203,367.60/305,137.80 = 98,132.40/x
  3. Step 3: Cross multiply
    203,367.60x = 305,137.80 × 98,132.40
  4. Step 4: Simplify right side
    203,367.60x = 29,943,904,644.72
  5. Step 5: Solve for x
    x = 29,943,904,644.72/203,367.60
  6. Step 6: Final answer
    x = 147,240.29

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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.