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Finding the Fourth Proportional to 276,662.20, 415,187.70 and 177,064.60

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Solution

The fourth proportional to 276,662.20, 415,187.70 and 177,064.60 is: 265,721.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,662.20 : 415,187.70 = 177,064.60 : x
  2. Step 2: Convert to fraction form
    276,662.20/415,187.70 = 177,064.60/x
  3. Step 3: Cross multiply
    276,662.20x = 415,187.70 × 177,064.60
  4. Step 4: Simplify right side
    276,662.20x = 73,515,044,025.42
  5. Step 5: Solve for x
    x = 73,515,044,025.42/276,662.20
  6. Step 6: Final answer
    x = 265,721.32

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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.