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Finding the Fourth Proportional to 221,212.95, 332,151.72 and 126,550

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Solution

The fourth proportional to 221,212.95, 332,151.72 and 126,550 is: 190,015.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,212.95 : 332,151.72 = 126,550 : x
  2. Step 2: Convert to fraction form
    221,212.95/332,151.72 = 126,550/x
  3. Step 3: Cross multiply
    221,212.95x = 332,151.72 × 126,550
  4. Step 4: Simplify right side
    221,212.95x = 42,033,800,166
  5. Step 5: Solve for x
    x = 42,033,800,166/221,212.95
  6. Step 6: Final answer
    x = 190,015.10

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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.