Home / 221,478.60-331,991.10-108,985.80

Finding the Fourth Proportional to 221,478.60, 331,991.10 and 108,985.80

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Solution

The fourth proportional to 221,478.60, 331,991.10 and 108,985.80 is: 163,367.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,478.60 : 331,991.10 = 108,985.80 : x
  2. Step 2: Convert to fraction form
    221,478.60/331,991.10 = 108,985.80/x
  3. Step 3: Cross multiply
    221,478.60x = 331,991.10 × 108,985.80
  4. Step 4: Simplify right side
    221,478.60x = 36,182,315,626.38
  5. Step 5: Solve for x
    x = 36,182,315,626.38/221,478.60
  6. Step 6: Final answer
    x = 163,367.10

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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.