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Finding the Fourth Proportional to 220,112.90, 330,169.35 and 218,039.30

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Solution

The fourth proportional to 220,112.90, 330,169.35 and 218,039.30 is: 327,058.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,112.90 : 330,169.35 = 218,039.30 : x
  2. Step 2: Convert to fraction form
    220,112.90/330,169.35 = 218,039.30/x
  3. Step 3: Cross multiply
    220,112.90x = 330,169.35 × 218,039.30
  4. Step 4: Simplify right side
    220,112.90x = 71,989,893,955.46
  5. Step 5: Solve for x
    x = 71,989,893,955.46/220,112.90
  6. Step 6: Final answer
    x = 327,058.95

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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.