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Finding the Fourth Proportional to 400,660.56, 552,938.40 and 230,906.16

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Solution

The fourth proportional to 400,660.56, 552,938.40 and 230,906.16 is: 318,665.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,660.56 : 552,938.40 = 230,906.16 : x
  2. Step 2: Convert to fraction form
    400,660.56/552,938.40 = 230,906.16/x
  3. Step 3: Cross multiply
    400,660.56x = 552,938.40 × 230,906.16
  4. Step 4: Simplify right side
    400,660.56x = 127,676,882,660.54
  5. Step 5: Solve for x
    x = 127,676,882,660.54/400,660.56
  6. Step 6: Final answer
    x = 318,665.96

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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.