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Finding the Fourth Proportional to 266,608.17, 367,680.83 and 221,214.21

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Solution

The fourth proportional to 266,608.17, 367,680.83 and 221,214.21 is: 305,077.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,608.17 : 367,680.83 = 221,214.21 : x
  2. Step 2: Convert to fraction form
    266,608.17/367,680.83 = 221,214.21/x
  3. Step 3: Cross multiply
    266,608.17x = 367,680.83 × 221,214.21
  4. Step 4: Simplify right side
    266,608.17x = 81,336,223,234.52
  5. Step 5: Solve for x
    x = 81,336,223,234.52/266,608.17
  6. Step 6: Final answer
    x = 305,077.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.