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Finding the Fourth Proportional to 343,641.21, 515,338.26 and 118,940.73

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Solution

The fourth proportional to 343,641.21, 515,338.26 and 118,940.73 is: 178,368.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,641.21 : 515,338.26 = 118,940.73 : x
  2. Step 2: Convert to fraction form
    343,641.21/515,338.26 = 118,940.73/x
  3. Step 3: Cross multiply
    343,641.21x = 515,338.26 × 118,940.73
  4. Step 4: Simplify right side
    343,641.21x = 61,294,708,841.33
  5. Step 5: Solve for x
    x = 61,294,708,841.33/343,641.21
  6. Step 6: Final answer
    x = 178,368.33

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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.