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Finding the Fourth Proportional to 220,164.48, 330,233.76 and 72,420.48

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Solution

The fourth proportional to 220,164.48, 330,233.76 and 72,420.48 is: 108,626.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,164.48 : 330,233.76 = 72,420.48 : x
  2. Step 2: Convert to fraction form
    220,164.48/330,233.76 = 72,420.48/x
  3. Step 3: Cross multiply
    220,164.48x = 330,233.76 × 72,420.48
  4. Step 4: Simplify right side
    220,164.48x = 23,915,687,411.40
  5. Step 5: Solve for x
    x = 23,915,687,411.40/220,164.48
  6. Step 6: Final answer
    x = 108,626.46

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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.