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Finding the Fourth Proportional to 276,693.80, 415,040.70 and 253,074.20

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Solution

The fourth proportional to 276,693.80, 415,040.70 and 253,074.20 is: 379,611.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,693.80 : 415,040.70 = 253,074.20 : x
  2. Step 2: Convert to fraction form
    276,693.80/415,040.70 = 253,074.20/x
  3. Step 3: Cross multiply
    276,693.80x = 415,040.70 × 253,074.20
  4. Step 4: Simplify right side
    276,693.80x = 105,036,093,119.94
  5. Step 5: Solve for x
    x = 105,036,093,119.94/276,693.80
  6. Step 6: Final answer
    x = 379,611.30

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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.