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Finding the Fourth Proportional to 321,717.31, 443,565.93 and 235,526.66

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Solution

The fourth proportional to 321,717.31, 443,565.93 and 235,526.66 is: 324,731.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,717.31 : 443,565.93 = 235,526.66 : x
  2. Step 2: Convert to fraction form
    321,717.31/443,565.93 = 235,526.66/x
  3. Step 3: Cross multiply
    321,717.31x = 443,565.93 × 235,526.66
  4. Step 4: Simplify right side
    321,717.31x = 104,471,600,694.07
  5. Step 5: Solve for x
    x = 104,471,600,694.07/321,717.31
  6. Step 6: Final answer
    x = 324,731.06

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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.