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Finding the Fourth Proportional to 200,324.76, 276,635.46 and 128,828.92

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Solution

The fourth proportional to 200,324.76, 276,635.46 and 128,828.92 is: 177,904.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,324.76 : 276,635.46 = 128,828.92 : x
  2. Step 2: Convert to fraction form
    200,324.76/276,635.46 = 128,828.92/x
  3. Step 3: Cross multiply
    200,324.76x = 276,635.46 × 128,828.92
  4. Step 4: Simplify right side
    200,324.76x = 35,638,647,545.50
  5. Step 5: Solve for x
    x = 35,638,647,545.50/200,324.76
  6. Step 6: Final answer
    x = 177,904.36

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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.