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Finding the Fourth Proportional to 328,016.56, 490,227.64 and 239,456.56

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Solution

The fourth proportional to 328,016.56, 490,227.64 and 239,456.56 is: 357,872.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,016.56 : 490,227.64 = 239,456.56 : x
  2. Step 2: Convert to fraction form
    328,016.56/490,227.64 = 239,456.56/x
  3. Step 3: Cross multiply
    328,016.56x = 490,227.64 × 239,456.56
  4. Step 4: Simplify right side
    328,016.56x = 117,388,224,291.32
  5. Step 5: Solve for x
    x = 117,388,224,291.32/328,016.56
  6. Step 6: Final answer
    x = 357,872.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.