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Finding the Fourth Proportional to 220,560.69, 330,809.73 and 70,781.57

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Solution

The fourth proportional to 220,560.69, 330,809.73 and 70,781.57 is: 106,162.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,560.69 : 330,809.73 = 70,781.57 : x
  2. Step 2: Convert to fraction form
    220,560.69/330,809.73 = 70,781.57/x
  3. Step 3: Cross multiply
    220,560.69x = 330,809.73 × 70,781.57
  4. Step 4: Simplify right side
    220,560.69x = 23,415,231,381.73
  5. Step 5: Solve for x
    x = 23,415,231,381.73/220,560.69
  6. Step 6: Final answer
    x = 106,162.30

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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.