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Finding the Fourth Proportional to 218,745.80, 327,938.70 and 98,810.60

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Solution

The fourth proportional to 218,745.80, 327,938.70 and 98,810.60 is: 148,134.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,745.80 : 327,938.70 = 98,810.60 : x
  2. Step 2: Convert to fraction form
    218,745.80/327,938.70 = 98,810.60/x
  3. Step 3: Cross multiply
    218,745.80x = 327,938.70 × 98,810.60
  4. Step 4: Simplify right side
    218,745.80x = 32,403,819,710.22
  5. Step 5: Solve for x
    x = 32,403,819,710.22/218,745.80
  6. Step 6: Final answer
    x = 148,134.59

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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.