Home / 343,619.20-515,305.32-118,918.66

Finding the Fourth Proportional to 343,619.20, 515,305.32 and 118,918.66

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Solution

The fourth proportional to 343,619.20, 515,305.32 and 118,918.66 is: 178,335.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,619.20 : 515,305.32 = 118,918.66 : x
  2. Step 2: Convert to fraction form
    343,619.20/515,305.32 = 118,918.66/x
  3. Step 3: Cross multiply
    343,619.20x = 515,305.32 × 118,918.66
  4. Step 4: Simplify right side
    343,619.20x = 61,279,418,145.27
  5. Step 5: Solve for x
    x = 61,279,418,145.27/343,619.20
  6. Step 6: Final answer
    x = 178,335.26

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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.