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Finding the Fourth Proportional to 276,995.44, 415,563 and 77,315.60

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Solution

The fourth proportional to 276,995.44, 415,563 and 77,315.60 is: 115,992.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,995.44 : 415,563 = 77,315.60 : x
  2. Step 2: Convert to fraction form
    276,995.44/415,563 = 77,315.60/x
  3. Step 3: Cross multiply
    276,995.44x = 415,563 × 77,315.60
  4. Step 4: Simplify right side
    276,995.44x = 32,129,502,682.80
  5. Step 5: Solve for x
    x = 32,129,502,682.80/276,995.44
  6. Step 6: Final answer
    x = 115,992.89

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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.