Home / 212,347.50-318,648.44-79,321.25

Finding the Fourth Proportional to 212,347.50, 318,648.44 and 79,321.25

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Solution

The fourth proportional to 212,347.50, 318,648.44 and 79,321.25 is: 119,029.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,347.50 : 318,648.44 = 79,321.25 : x
  2. Step 2: Convert to fraction form
    212,347.50/318,648.44 = 79,321.25/x
  3. Step 3: Cross multiply
    212,347.50x = 318,648.44 × 79,321.25
  4. Step 4: Simplify right side
    212,347.50x = 25,275,591,176.41
  5. Step 5: Solve for x
    x = 25,275,591,176.41/212,347.50
  6. Step 6: Final answer
    x = 119,029.38

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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.