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Finding the Fourth Proportional to 248,520.48, 342,961.92 and 135,342.96

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Solution

The fourth proportional to 248,520.48, 342,961.92 and 135,342.96 is: 186,775.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,520.48 : 342,961.92 = 135,342.96 : x
  2. Step 2: Convert to fraction form
    248,520.48/342,961.92 = 135,342.96/x
  3. Step 3: Cross multiply
    248,520.48x = 342,961.92 × 135,342.96
  4. Step 4: Simplify right side
    248,520.48x = 46,417,481,420.08
  5. Step 5: Solve for x
    x = 46,417,481,420.08/248,520.48
  6. Step 6: Final answer
    x = 186,775.28

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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.