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Finding the Fourth Proportional to 221,491.90, 305,552.55 and 160,968.70

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Solution

The fourth proportional to 221,491.90, 305,552.55 and 160,968.70 is: 222,059.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,491.90 : 305,552.55 = 160,968.70 : x
  2. Step 2: Convert to fraction form
    221,491.90/305,552.55 = 160,968.70/x
  3. Step 3: Cross multiply
    221,491.90x = 305,552.55 × 160,968.70
  4. Step 4: Simplify right side
    221,491.90x = 49,184,396,755.19
  5. Step 5: Solve for x
    x = 49,184,396,755.19/221,491.90
  6. Step 6: Final answer
    x = 222,059.57

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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.