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Finding the Fourth Proportional to 143,410.65, 215,127.36 and 43,579.56

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Solution

The fourth proportional to 143,410.65, 215,127.36 and 43,579.56 is: 65,372.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,410.65 : 215,127.36 = 43,579.56 : x
  2. Step 2: Convert to fraction form
    143,410.65/215,127.36 = 43,579.56/x
  3. Step 3: Cross multiply
    143,410.65x = 215,127.36 × 43,579.56
  4. Step 4: Simplify right side
    143,410.65x = 9,375,155,692.76
  5. Step 5: Solve for x
    x = 9,375,155,692.76/143,410.65
  6. Step 6: Final answer
    x = 65,372.80

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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.