Home / 221,032.61-331,563.50-80,889.65

Finding the Fourth Proportional to 221,032.61, 331,563.50 and 80,889.65

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Solution

The fourth proportional to 221,032.61, 331,563.50 and 80,889.65 is: 121,339.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,032.61 : 331,563.50 = 80,889.65 : x
  2. Step 2: Convert to fraction form
    221,032.61/331,563.50 = 80,889.65/x
  3. Step 3: Cross multiply
    221,032.61x = 331,563.50 × 80,889.65
  4. Step 4: Simplify right side
    221,032.61x = 26,820,053,405.51
  5. Step 5: Solve for x
    x = 26,820,053,405.51/221,032.61
  6. Step 6: Final answer
    x = 121,339.81

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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.