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Finding the Fourth Proportional to 276,765.30, 415,026.45 and 126,955.80

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Solution

The fourth proportional to 276,765.30, 415,026.45 and 126,955.80 is: 190,377.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,765.30 : 415,026.45 = 126,955.80 : x
  2. Step 2: Convert to fraction form
    276,765.30/415,026.45 = 126,955.80/x
  3. Step 3: Cross multiply
    276,765.30x = 415,026.45 × 126,955.80
  4. Step 4: Simplify right side
    276,765.30x = 52,690,014,980.91
  5. Step 5: Solve for x
    x = 52,690,014,980.91/276,765.30
  6. Step 6: Final answer
    x = 190,377.97

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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.