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Finding the Fourth Proportional to 225,756.59, 338,679.50 and 83,603.21

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Solution

The fourth proportional to 225,756.59, 338,679.50 and 83,603.21 is: 125,421.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,756.59 : 338,679.50 = 83,603.21 : x
  2. Step 2: Convert to fraction form
    225,756.59/338,679.50 = 83,603.21/x
  3. Step 3: Cross multiply
    225,756.59x = 338,679.50 × 83,603.21
  4. Step 4: Simplify right side
    225,756.59x = 28,314,691,249.78
  5. Step 5: Solve for x
    x = 28,314,691,249.78/225,756.59
  6. Step 6: Final answer
    x = 125,421.33

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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.