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Finding the Fourth Proportional to 221,209.13, 331,813.71 and 54,997.13

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Solution

The fourth proportional to 221,209.13, 331,813.71 and 54,997.13 is: 82,495.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,209.13 : 331,813.71 = 54,997.13 : x
  2. Step 2: Convert to fraction form
    221,209.13/331,813.71 = 54,997.13/x
  3. Step 3: Cross multiply
    221,209.13x = 331,813.71 × 54,997.13
  4. Step 4: Simplify right side
    221,209.13x = 18,248,800,085.58
  5. Step 5: Solve for x
    x = 18,248,800,085.58/221,209.13
  6. Step 6: Final answer
    x = 82,495.69

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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.