Home / 221,146.40-331,719.60-54,934.40

Finding the Fourth Proportional to 221,146.40, 331,719.60 and 54,934.40

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Solution

The fourth proportional to 221,146.40, 331,719.60 and 54,934.40 is: 82,401.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,146.40 : 331,719.60 = 54,934.40 : x
  2. Step 2: Convert to fraction form
    221,146.40/331,719.60 = 54,934.40/x
  3. Step 3: Cross multiply
    221,146.40x = 331,719.60 × 54,934.40
  4. Step 4: Simplify right side
    221,146.40x = 18,222,817,194.24
  5. Step 5: Solve for x
    x = 18,222,817,194.24/221,146.40
  6. Step 6: Final answer
    x = 82,401.60

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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.