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Finding the Fourth Proportional to 276,842.90, 415,264.46 and 77,168.42

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Solution

The fourth proportional to 276,842.90, 415,264.46 and 77,168.42 is: 115,752.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,842.90 : 415,264.46 = 77,168.42 : x
  2. Step 2: Convert to fraction form
    276,842.90/415,264.46 = 77,168.42/x
  3. Step 3: Cross multiply
    276,842.90x = 415,264.46 × 77,168.42
  4. Step 4: Simplify right side
    276,842.90x = 32,045,300,376.95
  5. Step 5: Solve for x
    x = 32,045,300,376.95/276,842.90
  6. Step 6: Final answer
    x = 115,752.66

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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.