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Finding the Fourth Proportional to 305,231.70, 457,523.55 and 147,357.30

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Solution

The fourth proportional to 305,231.70, 457,523.55 and 147,357.30 is: 220,879.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,231.70 : 457,523.55 = 147,357.30 : x
  2. Step 2: Convert to fraction form
    305,231.70/457,523.55 = 147,357.30/x
  3. Step 3: Cross multiply
    305,231.70x = 457,523.55 × 147,357.30
  4. Step 4: Simplify right side
    305,231.70x = 67,419,435,014.42
  5. Step 5: Solve for x
    x = 67,419,435,014.42/305,231.70
  6. Step 6: Final answer
    x = 220,879.53

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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.