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Finding the Fourth Proportional to 339,609.46, 509,635.32 and 129,249.22

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Solution

The fourth proportional to 339,609.46, 509,635.32 and 129,249.22 is: 193,957.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,609.46 : 509,635.32 = 129,249.22 : x
  2. Step 2: Convert to fraction form
    339,609.46/509,635.32 = 129,249.22/x
  3. Step 3: Cross multiply
    339,609.46x = 509,635.32 × 129,249.22
  4. Step 4: Simplify right side
    339,609.46x = 65,869,967,594.45
  5. Step 5: Solve for x
    x = 65,869,967,594.45/339,609.46
  6. Step 6: Final answer
    x = 193,957.99

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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.