Home / 339,579.12-509,385.60-129,233.36

Finding the Fourth Proportional to 339,579.12, 509,385.60 and 129,233.36

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Solution

The fourth proportional to 339,579.12, 509,385.60 and 129,233.36 is: 193,856.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,579.12 : 509,385.60 = 129,233.36 : x
  2. Step 2: Convert to fraction form
    339,579.12/509,385.60 = 129,233.36/x
  3. Step 3: Cross multiply
    339,579.12x = 509,385.60 × 129,233.36
  4. Step 4: Simplify right side
    339,579.12x = 65,829,612,623.62
  5. Step 5: Solve for x
    x = 65,829,612,623.62/339,579.12
  6. Step 6: Final answer
    x = 193,856.48

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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.