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Finding the Fourth Proportional to 218,425.32, 327,638.12 and 60,653.79

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Solution

The fourth proportional to 218,425.32, 327,638.12 and 60,653.79 is: 90,980.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,425.32 : 327,638.12 = 60,653.79 : x
  2. Step 2: Convert to fraction form
    218,425.32/327,638.12 = 60,653.79/x
  3. Step 3: Cross multiply
    218,425.32x = 327,638.12 × 60,653.79
  4. Step 4: Simplify right side
    218,425.32x = 19,872,493,423.21
  5. Step 5: Solve for x
    x = 19,872,493,423.21/218,425.32
  6. Step 6: Final answer
    x = 90,980.72

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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.