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Finding the Fourth Proportional to 343,380.32, 515,144.32 and 115,698.56

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Solution

The fourth proportional to 343,380.32, 515,144.32 and 115,698.56 is: 173,572.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,380.32 : 515,144.32 = 115,698.56 : x
  2. Step 2: Convert to fraction form
    343,380.32/515,144.32 = 115,698.56/x
  3. Step 3: Cross multiply
    343,380.32x = 515,144.32 × 115,698.56
  4. Step 4: Simplify right side
    343,380.32x = 59,601,456,016.18
  5. Step 5: Solve for x
    x = 59,601,456,016.18/343,380.32
  6. Step 6: Final answer
    x = 173,572.72

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1.5x scale

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.