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Finding the Fourth Proportional to 208,744.68, 288,069.30 and 122,680.56

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Solution

The fourth proportional to 208,744.68, 288,069.30 and 122,680.56 is: 169,300.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,744.68 : 288,069.30 = 122,680.56 : x
  2. Step 2: Convert to fraction form
    208,744.68/288,069.30 = 122,680.56/x
  3. Step 3: Cross multiply
    208,744.68x = 288,069.30 × 122,680.56
  4. Step 4: Simplify right side
    208,744.68x = 35,340,503,042.81
  5. Step 5: Solve for x
    x = 35,340,503,042.81/208,744.68
  6. Step 6: Final answer
    x = 169,300.14

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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.