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Finding the Fourth Proportional to 326,684.90, 489,371.24 and 148,947.41

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Solution

The fourth proportional to 326,684.90, 489,371.24 and 148,947.41 is: 223,121.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,684.90 : 489,371.24 = 148,947.41 : x
  2. Step 2: Convert to fraction form
    326,684.90/489,371.24 = 148,947.41/x
  3. Step 3: Cross multiply
    326,684.90x = 489,371.24 × 148,947.41
  4. Step 4: Simplify right side
    326,684.90x = 72,890,575,534.90
  5. Step 5: Solve for x
    x = 72,890,575,534.90/326,684.90
  6. Step 6: Final answer
    x = 223,121.96

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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.