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Finding the Fourth Proportional to 326,419.08, 489,168.96 and 259,562.52

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Solution

The fourth proportional to 326,419.08, 489,168.96 and 259,562.52 is: 388,978.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,419.08 : 489,168.96 = 259,562.52 : x
  2. Step 2: Convert to fraction form
    326,419.08/489,168.96 = 259,562.52/x
  3. Step 3: Cross multiply
    326,419.08x = 489,168.96 × 259,562.52
  4. Step 4: Simplify right side
    326,419.08x = 126,969,927,963.38
  5. Step 5: Solve for x
    x = 126,969,927,963.38/326,419.08
  6. Step 6: Final answer
    x = 388,978.27

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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.