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Finding the Fourth Proportional to 218,545.80, 327,638.70 and 98,610.60

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Solution

The fourth proportional to 218,545.80, 327,638.70 and 98,610.60 is: 147,834.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,545.80 : 327,638.70 = 98,610.60 : x
  2. Step 2: Convert to fraction form
    218,545.80/327,638.70 = 98,610.60/x
  3. Step 3: Cross multiply
    218,545.80x = 327,638.70 × 98,610.60
  4. Step 4: Simplify right side
    218,545.80x = 32,308,648,790.22
  5. Step 5: Solve for x
    x = 32,308,648,790.22/218,545.80
  6. Step 6: Final answer
    x = 147,834.68

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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.