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Finding the Fourth Proportional to 328,016.95, 490,228.21 and 239,456.95

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Solution

The fourth proportional to 328,016.95, 490,228.21 and 239,456.95 is: 357,873.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,016.95 : 490,228.21 = 239,456.95 : x
  2. Step 2: Convert to fraction form
    328,016.95/490,228.21 = 239,456.95/x
  3. Step 3: Cross multiply
    328,016.95x = 490,228.21 × 239,456.95
  4. Step 4: Simplify right side
    328,016.95x = 117,388,551,970.56
  5. Step 5: Solve for x
    x = 117,388,551,970.56/328,016.95
  6. Step 6: Final answer
    x = 357,873.43

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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.