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Finding the Fourth Proportional to 221,112, 331,719.84 and 73,368

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Solution

The fourth proportional to 221,112, 331,719.84 and 73,368 is: 110,069.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,112 : 331,719.84 = 73,368 : x
  2. Step 2: Convert to fraction form
    221,112/331,719.84 = 73,368/x
  3. Step 3: Cross multiply
    221,112x = 331,719.84 × 73,368
  4. Step 4: Simplify right side
    221,112x = 24,337,621,221.12
  5. Step 5: Solve for x
    x = 24,337,621,221.12/221,112
  6. Step 6: Final answer
    x = 110,069.20

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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.