Home / 376,129.20-518,922.09-247,137.11

Finding the Fourth Proportional to 376,129.20, 518,922.09 and 247,137.11

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Solution

The fourth proportional to 376,129.20, 518,922.09 and 247,137.11 is: 340,959.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,129.20 : 518,922.09 = 247,137.11 : x
  2. Step 2: Convert to fraction form
    376,129.20/518,922.09 = 247,137.11/x
  3. Step 3: Cross multiply
    376,129.20x = 518,922.09 × 247,137.11
  4. Step 4: Simplify right side
    376,129.20x = 128,244,903,043.15
  5. Step 5: Solve for x
    x = 128,244,903,043.15/376,129.20
  6. Step 6: Final answer
    x = 340,959.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.