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Finding the Fourth Proportional to 251,221.80, 376,880.86 and 82,790.76

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Solution

The fourth proportional to 251,221.80, 376,880.86 and 82,790.76 is: 124,202.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,221.80 : 376,880.86 = 82,790.76 : x
  2. Step 2: Convert to fraction form
    251,221.80/376,880.86 = 82,790.76/x
  3. Step 3: Cross multiply
    251,221.80x = 376,880.86 × 82,790.76
  4. Step 4: Simplify right side
    251,221.80x = 31,202,252,828.85
  5. Step 5: Solve for x
    x = 31,202,252,828.85/251,221.80
  6. Step 6: Final answer
    x = 124,202.01

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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.