Home / 339,581.37-509,388.98-129,235.61

Finding the Fourth Proportional to 339,581.37, 509,388.98 and 129,235.61

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Solution

The fourth proportional to 339,581.37, 509,388.98 and 129,235.61 is: 193,859.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,581.37 : 509,388.98 = 129,235.61 : x
  2. Step 2: Convert to fraction form
    339,581.37/509,388.98 = 129,235.61/x
  3. Step 3: Cross multiply
    339,581.37x = 509,388.98 × 129,235.61
  4. Step 4: Simplify right side
    339,581.37x = 65,831,194,911.40
  5. Step 5: Solve for x
    x = 65,831,194,911.40/339,581.37
  6. Step 6: Final answer
    x = 193,859.85

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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.