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Finding the Fourth Proportional to 143,280.70, 214,922.85 and 43,441.90

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Solution

The fourth proportional to 143,280.70, 214,922.85 and 43,441.90 is: 65,163.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,280.70 : 214,922.85 = 43,441.90 : x
  2. Step 2: Convert to fraction form
    143,280.70/214,922.85 = 43,441.90/x
  3. Step 3: Cross multiply
    143,280.70x = 214,922.85 × 43,441.90
  4. Step 4: Simplify right side
    143,280.70x = 9,336,656,957.42
  5. Step 5: Solve for x
    x = 9,336,656,957.42/143,280.70
  6. Step 6: Final answer
    x = 65,163.40

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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.