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Finding the Fourth Proportional to 221,804.20, 332,123.10 and 162,317.80

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Solution

The fourth proportional to 221,804.20, 332,123.10 and 162,317.80 is: 243,049.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,804.20 : 332,123.10 = 162,317.80 : x
  2. Step 2: Convert to fraction form
    221,804.20/332,123.10 = 162,317.80/x
  3. Step 3: Cross multiply
    221,804.20x = 332,123.10 × 162,317.80
  4. Step 4: Simplify right side
    221,804.20x = 53,909,490,921.18
  5. Step 5: Solve for x
    x = 53,909,490,921.18/221,804.20
  6. Step 6: Final answer
    x = 243,049.91

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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.