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Finding the Fourth Proportional to 220,560.82, 330,809.92 and 70,781.69

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Solution

The fourth proportional to 220,560.82, 330,809.92 and 70,781.69 is: 106,162.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,560.82 : 330,809.92 = 70,781.69 : x
  2. Step 2: Convert to fraction form
    220,560.82/330,809.92 = 70,781.69/x
  3. Step 3: Cross multiply
    220,560.82x = 330,809.92 × 70,781.69
  4. Step 4: Simplify right side
    220,560.82x = 23,415,284,852.46
  5. Step 5: Solve for x
    x = 23,415,284,852.46/220,560.82
  6. Step 6: Final answer
    x = 106,162.49

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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.