Home / 219,008.38-328,371.32-85,902.09

Finding the Fourth Proportional to 219,008.38, 328,371.32 and 85,902.09

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Solution

The fourth proportional to 219,008.38, 328,371.32 and 85,902.09 is: 128,797.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,008.38 : 328,371.32 = 85,902.09 : x
  2. Step 2: Convert to fraction form
    219,008.38/328,371.32 = 85,902.09/x
  3. Step 3: Cross multiply
    219,008.38x = 328,371.32 × 85,902.09
  4. Step 4: Simplify right side
    219,008.38x = 28,207,782,898.81
  5. Step 5: Solve for x
    x = 28,207,782,898.81/219,008.38
  6. Step 6: Final answer
    x = 128,797.73

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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.