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Finding the Fourth Proportional to 221,920.80, 333,140.40 and 127,226.40

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Solution

The fourth proportional to 221,920.80, 333,140.40 and 127,226.40 is: 190,988.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,920.80 : 333,140.40 = 127,226.40 : x
  2. Step 2: Convert to fraction form
    221,920.80/333,140.40 = 127,226.40/x
  3. Step 3: Cross multiply
    221,920.80x = 333,140.40 × 127,226.40
  4. Step 4: Simplify right side
    221,920.80x = 42,384,253,786.56
  5. Step 5: Solve for x
    x = 42,384,253,786.56/221,920.80
  6. Step 6: Final answer
    x = 190,988.20

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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.