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Finding the Fourth Proportional to 221,786.65, 332,707.61 and 86,833.27

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Solution

The fourth proportional to 221,786.65, 332,707.61 and 86,833.27 is: 130,260.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,786.65 : 332,707.61 = 86,833.27 : x
  2. Step 2: Convert to fraction form
    221,786.65/332,707.61 = 86,833.27/x
  3. Step 3: Cross multiply
    221,786.65x = 332,707.61 × 86,833.27
  4. Step 4: Simplify right side
    221,786.65x = 28,890,089,730.18
  5. Step 5: Solve for x
    x = 28,890,089,730.18/221,786.65
  6. Step 6: Final answer
    x = 130,260.72

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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.