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Finding the Fourth Proportional to 200,083.70, 276,139.32 and 115,217.30

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Solution

The fourth proportional to 200,083.70, 276,139.32 and 115,217.30 is: 159,013.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,083.70 : 276,139.32 = 115,217.30 : x
  2. Step 2: Convert to fraction form
    200,083.70/276,139.32 = 115,217.30/x
  3. Step 3: Cross multiply
    200,083.70x = 276,139.32 × 115,217.30
  4. Step 4: Simplify right side
    200,083.70x = 31,816,026,874.24
  5. Step 5: Solve for x
    x = 31,816,026,874.24/200,083.70
  6. Step 6: Final answer
    x = 159,013.59

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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.