Home / 219,039.18-328,561.38-85,982.10

Finding the Fourth Proportional to 219,039.18, 328,561.38 and 85,982.10

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Solution

The fourth proportional to 219,039.18, 328,561.38 and 85,982.10 is: 128,974.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,039.18 : 328,561.38 = 85,982.10 : x
  2. Step 2: Convert to fraction form
    219,039.18/328,561.38 = 85,982.10/x
  3. Step 3: Cross multiply
    219,039.18x = 328,561.38 × 85,982.10
  4. Step 4: Simplify right side
    219,039.18x = 28,250,397,431.30
  5. Step 5: Solve for x
    x = 28,250,397,431.30/219,039.18
  6. Step 6: Final answer
    x = 128,974.17

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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.