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Finding the Fourth Proportional to 515,049.88, 772,416.68 and 356,146.80

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Solution

The fourth proportional to 515,049.88, 772,416.68 and 356,146.80 is: 534,110.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,049.88 : 772,416.68 = 356,146.80 : x
  2. Step 2: Convert to fraction form
    515,049.88/772,416.68 = 356,146.80/x
  3. Step 3: Cross multiply
    515,049.88x = 772,416.68 × 356,146.80
  4. Step 4: Simplify right side
    515,049.88x = 275,093,728,848.62
  5. Step 5: Solve for x
    x = 275,093,728,848.62/515,049.88
  6. Step 6: Final answer
    x = 534,110.85

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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.