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Finding the Fourth Proportional to 281,217.87, 388,020.65 and 166,532.54

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Solution

The fourth proportional to 281,217.87, 388,020.65 and 166,532.54 is: 229,779.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,217.87 : 388,020.65 = 166,532.54 : x
  2. Step 2: Convert to fraction form
    281,217.87/388,020.65 = 166,532.54/x
  3. Step 3: Cross multiply
    281,217.87x = 388,020.65 × 166,532.54
  4. Step 4: Simplify right side
    281,217.87x = 64,618,061,644.19
  5. Step 5: Solve for x
    x = 64,618,061,644.19/281,217.87
  6. Step 6: Final answer
    x = 229,779.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.