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Finding the Fourth Proportional to 143,324.80, 214,987.65 and 43,485.82

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Solution

The fourth proportional to 143,324.80, 214,987.65 and 43,485.82 is: 65,228.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,324.80 : 214,987.65 = 43,485.82 : x
  2. Step 2: Convert to fraction form
    143,324.80/214,987.65 = 43,485.82/x
  3. Step 3: Cross multiply
    143,324.80x = 214,987.65 × 43,485.82
  4. Step 4: Simplify right side
    143,324.80x = 9,348,914,250.12
  5. Step 5: Solve for x
    x = 9,348,914,250.12/143,324.80
  6. Step 6: Final answer
    x = 65,228.87

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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.