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Finding the Fourth Proportional to 248,285, 342,633.30 and 135,108.56

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Solution

The fourth proportional to 248,285, 342,633.30 and 135,108.56 is: 186,449.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,285 : 342,633.30 = 135,108.56 : x
  2. Step 2: Convert to fraction form
    248,285/342,633.30 = 135,108.56/x
  3. Step 3: Cross multiply
    248,285x = 342,633.30 × 135,108.56
  4. Step 4: Simplify right side
    248,285x = 46,292,691,771.05
  5. Step 5: Solve for x
    x = 46,292,691,771.05/248,285
  6. Step 6: Final answer
    x = 186,449.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.