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Finding the Fourth Proportional to 326,626.06, 489,689.89 and 149,008.86

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Solution

The fourth proportional to 326,626.06, 489,689.89 and 149,008.86 is: 223,399.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,626.06 : 489,689.89 = 149,008.86 : x
  2. Step 2: Convert to fraction form
    326,626.06/489,689.89 = 149,008.86/x
  3. Step 3: Cross multiply
    326,626.06x = 489,689.89 × 149,008.86
  4. Step 4: Simplify right side
    326,626.06x = 72,968,132,262.43
  5. Step 5: Solve for x
    x = 72,968,132,262.43/326,626.06
  6. Step 6: Final answer
    x = 223,399.60

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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.