Home / 226,164.38-339,402.09-78,420.38

Finding the Fourth Proportional to 226,164.38, 339,402.09 and 78,420.38

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Solution

The fourth proportional to 226,164.38, 339,402.09 and 78,420.38 is: 117,684.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,164.38 : 339,402.09 = 78,420.38 : x
  2. Step 2: Convert to fraction form
    226,164.38/339,402.09 = 78,420.38/x
  3. Step 3: Cross multiply
    226,164.38x = 339,402.09 × 78,420.38
  4. Step 4: Simplify right side
    226,164.38x = 26,616,040,870.59
  5. Step 5: Solve for x
    x = 26,616,040,870.59/226,164.38
  6. Step 6: Final answer
    x = 117,684.50

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1.5x scale

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.