Home / 220,261.22-330,378.45-78,113.54

Finding the Fourth Proportional to 220,261.22, 330,378.45 and 78,113.54

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Solution

The fourth proportional to 220,261.22, 330,378.45 and 78,113.54 is: 117,165.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,261.22 : 330,378.45 = 78,113.54 : x
  2. Step 2: Convert to fraction form
    220,261.22/330,378.45 = 78,113.54/x
  3. Step 3: Cross multiply
    220,261.22x = 330,378.45 × 78,113.54
  4. Step 4: Simplify right side
    220,261.22x = 25,807,030,269.21
  5. Step 5: Solve for x
    x = 25,807,030,269.21/220,261.22
  6. Step 6: Final answer
    x = 117,165.56

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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.