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Finding the Fourth Proportional to 343,519.25, 515,314.22 and 118,879.29

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Solution

The fourth proportional to 343,519.25, 515,314.22 and 118,879.29 is: 178,331.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,519.25 : 515,314.22 = 118,879.29 : x
  2. Step 2: Convert to fraction form
    343,519.25/515,314.22 = 118,879.29/x
  3. Step 3: Cross multiply
    343,519.25x = 515,314.22 × 118,879.29
  4. Step 4: Simplify right side
    343,519.25x = 61,260,188,006.11
  5. Step 5: Solve for x
    x = 61,260,188,006.11/343,519.25
  6. Step 6: Final answer
    x = 178,331.17

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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.