Home / 343,743.95-515,640.77-143,863.22

Finding the Fourth Proportional to 343,743.95, 515,640.77 and 143,863.22

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Solution

The fourth proportional to 343,743.95, 515,640.77 and 143,863.22 is: 215,805.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,743.95 : 515,640.77 = 143,863.22 : x
  2. Step 2: Convert to fraction form
    343,743.95/515,640.77 = 143,863.22/x
  3. Step 3: Cross multiply
    343,743.95x = 515,640.77 × 143,863.22
  4. Step 4: Simplify right side
    343,743.95x = 74,181,738,237.96
  5. Step 5: Solve for x
    x = 74,181,738,237.96/343,743.95
  6. Step 6: Final answer
    x = 215,805.22

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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.