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Finding the Fourth Proportional to 354,351.18, 531,775.83 and 320,471.81

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Solution

The fourth proportional to 354,351.18, 531,775.83 and 320,471.81 is: 480,932.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,351.18 : 531,775.83 = 320,471.81 : x
  2. Step 2: Convert to fraction form
    354,351.18/531,775.83 = 320,471.81/x
  3. Step 3: Cross multiply
    354,351.18x = 531,775.83 × 320,471.81
  4. Step 4: Simplify right side
    354,351.18x = 170,419,162,754.35
  5. Step 5: Solve for x
    x = 170,419,162,754.35/354,351.18
  6. Step 6: Final answer
    x = 480,932.96

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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.