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Finding the Fourth Proportional to 276,788.80, 415,161.60 and 108,276.40

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Solution

The fourth proportional to 276,788.80, 415,161.60 and 108,276.40 is: 162,406.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,788.80 : 415,161.60 = 108,276.40 : x
  2. Step 2: Convert to fraction form
    276,788.80/415,161.60 = 108,276.40/x
  3. Step 3: Cross multiply
    276,788.80x = 415,161.60 × 108,276.40
  4. Step 4: Simplify right side
    276,788.80x = 44,952,203,466.24
  5. Step 5: Solve for x
    x = 44,952,203,466.24/276,788.80
  6. Step 6: Final answer
    x = 162,406.15

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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.