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Finding the Fourth Proportional to 218,431.60, 327,647.52 and 60,660.04

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Solution

The fourth proportional to 218,431.60, 327,647.52 and 60,660.04 is: 90,990.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,431.60 : 327,647.52 = 60,660.04 : x
  2. Step 2: Convert to fraction form
    218,431.60/327,647.52 = 60,660.04/x
  3. Step 3: Cross multiply
    218,431.60x = 327,647.52 × 60,660.04
  4. Step 4: Simplify right side
    218,431.60x = 19,875,111,669.10
  5. Step 5: Solve for x
    x = 19,875,111,669.10/218,431.60
  6. Step 6: Final answer
    x = 90,990.09

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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.