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Finding the Fourth Proportional to 231,074.70, 346,612.05 and 221,889.30

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Solution

The fourth proportional to 231,074.70, 346,612.05 and 221,889.30 is: 332,833.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,074.70 : 346,612.05 = 221,889.30 : x
  2. Step 2: Convert to fraction form
    231,074.70/346,612.05 = 221,889.30/x
  3. Step 3: Cross multiply
    231,074.70x = 346,612.05 × 221,889.30
  4. Step 4: Simplify right side
    231,074.70x = 76,909,505,146.07
  5. Step 5: Solve for x
    x = 76,909,505,146.07/231,074.70
  6. Step 6: Final answer
    x = 332,833.95

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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.