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Finding the Fourth Proportional to 200,619.80, 301,010.70 and 88,321.40

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Solution

The fourth proportional to 200,619.80, 301,010.70 and 88,321.40 is: 132,517.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,619.80 : 301,010.70 = 88,321.40 : x
  2. Step 2: Convert to fraction form
    200,619.80/301,010.70 = 88,321.40/x
  3. Step 3: Cross multiply
    200,619.80x = 301,010.70 × 88,321.40
  4. Step 4: Simplify right side
    200,619.80x = 26,585,686,438.98
  5. Step 5: Solve for x
    x = 26,585,686,438.98/200,619.80
  6. Step 6: Final answer
    x = 132,517.76

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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.