Home / 219,334.78-329,137.53-86,191.66

Finding the Fourth Proportional to 219,334.78, 329,137.53 and 86,191.66

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Solution

The fourth proportional to 219,334.78, 329,137.53 and 86,191.66 is: 129,340.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,334.78 : 329,137.53 = 86,191.66 : x
  2. Step 2: Convert to fraction form
    219,334.78/329,137.53 = 86,191.66/x
  3. Step 3: Cross multiply
    219,334.78x = 329,137.53 × 86,191.66
  4. Step 4: Simplify right side
    219,334.78x = 28,368,910,079.00
  5. Step 5: Solve for x
    x = 28,368,910,079.00/219,334.78
  6. Step 6: Final answer
    x = 129,340.68

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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.