Home / 343,743.32-515,639.82-143,862.59

Finding the Fourth Proportional to 343,743.32, 515,639.82 and 143,862.59

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Solution

The fourth proportional to 343,743.32, 515,639.82 and 143,862.59 is: 215,804.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,743.32 : 515,639.82 = 143,862.59 : x
  2. Step 2: Convert to fraction form
    343,743.32/515,639.82 = 143,862.59/x
  3. Step 3: Cross multiply
    343,743.32x = 515,639.82 × 143,862.59
  4. Step 4: Simplify right side
    343,743.32x = 74,181,280,012.33
  5. Step 5: Solve for x
    x = 74,181,280,012.33/343,743.32
  6. Step 6: Final answer
    x = 215,804.28

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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.