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Finding the Fourth Proportional to 220,701, 331,052.58 and 54,489

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Solution

The fourth proportional to 220,701, 331,052.58 and 54,489 is: 81,733.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,701 : 331,052.58 = 54,489 : x
  2. Step 2: Convert to fraction form
    220,701/331,052.58 = 54,489/x
  3. Step 3: Cross multiply
    220,701x = 331,052.58 × 54,489
  4. Step 4: Simplify right side
    220,701x = 18,038,724,031.62
  5. Step 5: Solve for x
    x = 18,038,724,031.62/220,701
  6. Step 6: Final answer
    x = 81,733.77

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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.