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Finding the Fourth Proportional to 221,343.84, 331,328.43 and 119,889.90

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Solution

The fourth proportional to 221,343.84, 331,328.43 and 119,889.90 is: 179,462.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,343.84 : 331,328.43 = 119,889.90 : x
  2. Step 2: Convert to fraction form
    221,343.84/331,328.43 = 119,889.90/x
  3. Step 3: Cross multiply
    221,343.84x = 331,328.43 × 119,889.90
  4. Step 4: Simplify right side
    221,343.84x = 39,722,932,339.86
  5. Step 5: Solve for x
    x = 39,722,932,339.86/221,343.84
  6. Step 6: Final answer
    x = 179,462.56

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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.