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Finding the Fourth Proportional to 203,710.60, 305,565.90 and 148,414.60

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Solution

The fourth proportional to 203,710.60, 305,565.90 and 148,414.60 is: 222,621.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,710.60 : 305,565.90 = 148,414.60 : x
  2. Step 2: Convert to fraction form
    203,710.60/305,565.90 = 148,414.60/x
  3. Step 3: Cross multiply
    203,710.60x = 305,565.90 × 148,414.60
  4. Step 4: Simplify right side
    203,710.60x = 45,350,440,822.14
  5. Step 5: Solve for x
    x = 45,350,440,822.14/203,710.60
  6. Step 6: Final answer
    x = 222,621.90

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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.