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Finding the Fourth Proportional to 221,200.88, 331,802.53 and 54,988.88

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Solution

The fourth proportional to 221,200.88, 331,802.53 and 54,988.88 is: 82,483.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,200.88 : 331,802.53 = 54,988.88 : x
  2. Step 2: Convert to fraction form
    221,200.88/331,802.53 = 54,988.88/x
  3. Step 3: Cross multiply
    221,200.88x = 331,802.53 × 54,988.88
  4. Step 4: Simplify right side
    221,200.88x = 18,245,447,709.38
  5. Step 5: Solve for x
    x = 18,245,447,709.38/221,200.88
  6. Step 6: Final answer
    x = 82,483.61

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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.