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Finding the Fourth Proportional to 276,959.85, 415,273.73 and 127,012.34

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Solution

The fourth proportional to 276,959.85, 415,273.73 and 127,012.34 is: 190,442.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,959.85 : 415,273.73 = 127,012.34 : x
  2. Step 2: Convert to fraction form
    276,959.85/415,273.73 = 127,012.34/x
  3. Step 3: Cross multiply
    276,959.85x = 415,273.73 × 127,012.34
  4. Step 4: Simplify right side
    276,959.85x = 52,744,885,476.40
  5. Step 5: Solve for x
    x = 52,744,885,476.40/276,959.85
  6. Step 6: Final answer
    x = 190,442.35

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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.