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Finding the Fourth Proportional to 223,812.70, 335,719.05 and 221,479.90

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Solution

The fourth proportional to 223,812.70, 335,719.05 and 221,479.90 is: 332,219.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,812.70 : 335,719.05 = 221,479.90 : x
  2. Step 2: Convert to fraction form
    223,812.70/335,719.05 = 221,479.90/x
  3. Step 3: Cross multiply
    223,812.70x = 335,719.05 × 221,479.90
  4. Step 4: Simplify right side
    223,812.70x = 74,355,021,622.10
  5. Step 5: Solve for x
    x = 74,355,021,622.10/223,812.70
  6. Step 6: Final answer
    x = 332,219.85

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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.