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Finding the Fourth Proportional to 218,242.98, 327,444.42 and 91,915.02

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Solution

The fourth proportional to 218,242.98, 327,444.42 and 91,915.02 is: 137,906.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,242.98 : 327,444.42 = 91,915.02 : x
  2. Step 2: Convert to fraction form
    218,242.98/327,444.42 = 91,915.02/x
  3. Step 3: Cross multiply
    218,242.98x = 327,444.42 × 91,915.02
  4. Step 4: Simplify right side
    218,242.98x = 30,097,060,413.19
  5. Step 5: Solve for x
    x = 30,097,060,413.19/218,242.98
  6. Step 6: Final answer
    x = 137,906.20

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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.