Home / 339,498.12-509,394.78-129,196.20

Finding the Fourth Proportional to 339,498.12, 509,394.78 and 129,196.20

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Solution

The fourth proportional to 339,498.12, 509,394.78 and 129,196.20 is: 193,850.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,498.12 : 509,394.78 = 129,196.20 : x
  2. Step 2: Convert to fraction form
    339,498.12/509,394.78 = 129,196.20/x
  3. Step 3: Cross multiply
    339,498.12x = 509,394.78 × 129,196.20
  4. Step 4: Simplify right side
    339,498.12x = 65,811,869,875.84
  5. Step 5: Solve for x
    x = 65,811,869,875.84/339,498.12
  6. Step 6: Final answer
    x = 193,850.47

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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.