Home / 276,821.20-415,231.80-89,851.60

Finding the Fourth Proportional to 276,821.20, 415,231.80 and 89,851.60

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Solution

The fourth proportional to 276,821.20, 415,231.80 and 89,851.60 is: 134,777.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,821.20 : 415,231.80 = 89,851.60 : x
  2. Step 2: Convert to fraction form
    276,821.20/415,231.80 = 89,851.60/x
  3. Step 3: Cross multiply
    276,821.20x = 415,231.80 × 89,851.60
  4. Step 4: Simplify right side
    276,821.20x = 37,309,241,600.88
  5. Step 5: Solve for x
    x = 37,309,241,600.88/276,821.20
  6. Step 6: Final answer
    x = 134,777.40

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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.