Home / 221,237.40-331,817.70-80,923.80

Finding the Fourth Proportional to 221,237.40, 331,817.70 and 80,923.80

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Solution

The fourth proportional to 221,237.40, 331,817.70 and 80,923.80 is: 121,371.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,237.40 : 331,817.70 = 80,923.80 : x
  2. Step 2: Convert to fraction form
    221,237.40/331,817.70 = 80,923.80/x
  3. Step 3: Cross multiply
    221,237.40x = 331,817.70 × 80,923.80
  4. Step 4: Simplify right side
    221,237.40x = 26,851,949,191.26
  5. Step 5: Solve for x
    x = 26,851,949,191.26/221,237.40
  6. Step 6: Final answer
    x = 121,371.65

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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.