Home / 220,883.40-331,325.10-80,646.60

Finding the Fourth Proportional to 220,883.40, 331,325.10 and 80,646.60

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Solution

The fourth proportional to 220,883.40, 331,325.10 and 80,646.60 is: 120,969.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,883.40 : 331,325.10 = 80,646.60 : x
  2. Step 2: Convert to fraction form
    220,883.40/331,325.10 = 80,646.60/x
  3. Step 3: Cross multiply
    220,883.40x = 331,325.10 × 80,646.60
  4. Step 4: Simplify right side
    220,883.40x = 26,720,242,809.66
  5. Step 5: Solve for x
    x = 26,720,242,809.66/220,883.40
  6. Step 6: Final answer
    x = 120,969.90

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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.