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Finding the Fourth Proportional to 285,756.18, 428,601.39 and 75,410.52

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Solution

The fourth proportional to 285,756.18, 428,601.39 and 75,410.52 is: 113,107.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,756.18 : 428,601.39 = 75,410.52 : x
  2. Step 2: Convert to fraction form
    285,756.18/428,601.39 = 75,410.52/x
  3. Step 3: Cross multiply
    285,756.18x = 428,601.39 × 75,410.52
  4. Step 4: Simplify right side
    285,756.18x = 32,321,053,692.62
  5. Step 5: Solve for x
    x = 32,321,053,692.62/285,756.18
  6. Step 6: Final answer
    x = 113,107.10

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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.