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Finding the Fourth Proportional to 515,169.56, 772,745.70 and 141,192.56

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Solution

The fourth proportional to 515,169.56, 772,745.70 and 141,192.56 is: 211,786.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,169.56 : 772,745.70 = 141,192.56 : x
  2. Step 2: Convert to fraction form
    515,169.56/772,745.70 = 141,192.56/x
  3. Step 3: Cross multiply
    515,169.56x = 772,745.70 × 141,192.56
  4. Step 4: Simplify right side
    515,169.56x = 109,105,943,611.99
  5. Step 5: Solve for x
    x = 109,105,943,611.99/515,169.56
  6. Step 6: Final answer
    x = 211,786.47

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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.