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Finding the Fourth Proportional to 218,136.40, 326,801.40 and 124,363.60

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Solution

The fourth proportional to 218,136.40, 326,801.40 and 124,363.60 is: 186,315.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,136.40 : 326,801.40 = 124,363.60 : x
  2. Step 2: Convert to fraction form
    218,136.40/326,801.40 = 124,363.60/x
  3. Step 3: Cross multiply
    218,136.40x = 326,801.40 × 124,363.60
  4. Step 4: Simplify right side
    218,136.40x = 40,642,198,589.04
  5. Step 5: Solve for x
    x = 40,642,198,589.04/218,136.40
  6. Step 6: Final answer
    x = 186,315.53

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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.