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Finding the Fourth Proportional to 255,428.97, 352,449.75 and 154,826.97

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Solution

The fourth proportional to 255,428.97, 352,449.75 and 154,826.97 is: 213,635.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,428.97 : 352,449.75 = 154,826.97 : x
  2. Step 2: Convert to fraction form
    255,428.97/352,449.75 = 154,826.97/x
  3. Step 3: Cross multiply
    255,428.97x = 352,449.75 × 154,826.97
  4. Step 4: Simplify right side
    255,428.97x = 54,568,726,869.76
  5. Step 5: Solve for x
    x = 54,568,726,869.76/255,428.97
  6. Step 6: Final answer
    x = 213,635.62

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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.