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Finding the Fourth Proportional to 225,428.79, 338,016.51 and 154,431.48

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Solution

The fourth proportional to 225,428.79, 338,016.51 and 154,431.48 is: 231,560.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,428.79 : 338,016.51 = 154,431.48 : x
  2. Step 2: Convert to fraction form
    225,428.79/338,016.51 = 154,431.48/x
  3. Step 3: Cross multiply
    225,428.79x = 338,016.51 × 154,431.48
  4. Step 4: Simplify right side
    225,428.79x = 52,200,389,903.73
  5. Step 5: Solve for x
    x = 52,200,389,903.73/225,428.79
  6. Step 6: Final answer
    x = 231,560.44

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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.