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Finding the Fourth Proportional to 522,452.12, 783,679.02 and 143,378.03

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Solution

The fourth proportional to 522,452.12, 783,679.02 and 143,378.03 is: 215,067.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,452.12 : 783,679.02 = 143,378.03 : x
  2. Step 2: Convert to fraction form
    522,452.12/783,679.02 = 143,378.03/x
  3. Step 3: Cross multiply
    522,452.12x = 783,679.02 × 143,378.03
  4. Step 4: Simplify right side
    522,452.12x = 112,362,350,121.54
  5. Step 5: Solve for x
    x = 112,362,350,121.54/522,452.12
  6. Step 6: Final answer
    x = 215,067.27

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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.