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Finding the Fourth Proportional to 339,608.46, 509,633.82 and 129,248.22

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Solution

The fourth proportional to 339,608.46, 509,633.82 and 129,248.22 is: 193,956.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,608.46 : 509,633.82 = 129,248.22 : x
  2. Step 2: Convert to fraction form
    339,608.46/509,633.82 = 129,248.22/x
  3. Step 3: Cross multiply
    339,608.46x = 509,633.82 × 129,248.22
  4. Step 4: Simplify right side
    339,608.46x = 65,869,264,086.80
  5. Step 5: Solve for x
    x = 65,869,264,086.80/339,608.46
  6. Step 6: Final answer
    x = 193,956.49

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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.