Home / 219,040.38-328,560.57-85,983.30

Finding the Fourth Proportional to 219,040.38, 328,560.57 and 85,983.30

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Solution

The fourth proportional to 219,040.38, 328,560.57 and 85,983.30 is: 128,974.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,040.38 : 328,560.57 = 85,983.30 : x
  2. Step 2: Convert to fraction form
    219,040.38/328,560.57 = 85,983.30/x
  3. Step 3: Cross multiply
    219,040.38x = 328,560.57 × 85,983.30
  4. Step 4: Simplify right side
    219,040.38x = 28,250,722,058.48
  5. Step 5: Solve for x
    x = 28,250,722,058.48/219,040.38
  6. Step 6: Final answer
    x = 128,974.95

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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.