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Finding the Fourth Proportional to 326,622.06, 489,683.90 and 149,004.86

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Solution

The fourth proportional to 326,622.06, 489,683.90 and 149,004.86 is: 223,393.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,622.06 : 489,683.90 = 149,004.86 : x
  2. Step 2: Convert to fraction form
    326,622.06/489,683.90 = 149,004.86/x
  3. Step 3: Cross multiply
    326,622.06x = 489,683.90 × 149,004.86
  4. Step 4: Simplify right side
    326,622.06x = 72,965,277,770.31
  5. Step 5: Solve for x
    x = 72,965,277,770.31/326,622.06
  6. Step 6: Final answer
    x = 223,393.60

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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.