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Finding the Fourth Proportional to 221,256.40, 331,885.80 and 55,044.40

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Solution

The fourth proportional to 221,256.40, 331,885.80 and 55,044.40 is: 82,566.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,256.40 : 331,885.80 = 55,044.40 : x
  2. Step 2: Convert to fraction form
    221,256.40/331,885.80 = 55,044.40/x
  3. Step 3: Cross multiply
    221,256.40x = 331,885.80 × 55,044.40
  4. Step 4: Simplify right side
    221,256.40x = 18,268,454,729.52
  5. Step 5: Solve for x
    x = 18,268,454,729.52/221,256.40
  6. Step 6: Final answer
    x = 82,566.90

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1.5x scale

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.