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Finding the Fourth Proportional to 220,539, 330,788.78 and 70,738.60

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Solution

The fourth proportional to 220,539, 330,788.78 and 70,738.60 is: 106,101.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,539 : 330,788.78 = 70,738.60 : x
  2. Step 2: Convert to fraction form
    220,539/330,788.78 = 70,738.60/x
  3. Step 3: Cross multiply
    220,539x = 330,788.78 × 70,738.60
  4. Step 4: Simplify right side
    220,539x = 23,399,535,192.91
  5. Step 5: Solve for x
    x = 23,399,535,192.91/220,539
  6. Step 6: Final answer
    x = 106,101.57

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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.