Home / 343,359.90-515,268.36-141,121.86

Finding the Fourth Proportional to 343,359.90, 515,268.36 and 141,121.86

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Solution

The fourth proportional to 343,359.90, 515,268.36 and 141,121.86 is: 211,776.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,359.90 : 515,268.36 = 141,121.86 : x
  2. Step 2: Convert to fraction form
    343,359.90/515,268.36 = 141,121.86/x
  3. Step 3: Cross multiply
    343,359.90x = 515,268.36 × 141,121.86
  4. Step 4: Simplify right side
    343,359.90x = 72,715,629,362.35
  5. Step 5: Solve for x
    x = 72,715,629,362.35/343,359.90
  6. Step 6: Final answer
    x = 211,776.71

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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.