Home / 212,578.20-318,846.24-72,334.80

Finding the Fourth Proportional to 212,578.20, 318,846.24 and 72,334.80

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Solution

The fourth proportional to 212,578.20, 318,846.24 and 72,334.80 is: 108,495.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,578.20 : 318,846.24 = 72,334.80 : x
  2. Step 2: Convert to fraction form
    212,578.20/318,846.24 = 72,334.80/x
  3. Step 3: Cross multiply
    212,578.20x = 318,846.24 × 72,334.80
  4. Step 4: Simplify right side
    212,578.20x = 23,063,679,001.15
  5. Step 5: Solve for x
    x = 23,063,679,001.15/212,578.20
  6. Step 6: Final answer
    x = 108,495.03

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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.