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Finding the Fourth Proportional to 213,073.67, 319,527.44 and 79,881.25

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Solution

The fourth proportional to 213,073.67, 319,527.44 and 79,881.25 is: 119,790.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,073.67 : 319,527.44 = 79,881.25 : x
  2. Step 2: Convert to fraction form
    213,073.67/319,527.44 = 79,881.25/x
  3. Step 3: Cross multiply
    213,073.67x = 319,527.44 × 79,881.25
  4. Step 4: Simplify right side
    213,073.67x = 25,524,251,316.50
  5. Step 5: Solve for x
    x = 25,524,251,316.50/213,073.67
  6. Step 6: Final answer
    x = 119,790.73

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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.