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Finding the Fourth Proportional to 259,998.82, 389,730.65 and 126,714.15

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Solution

The fourth proportional to 259,998.82, 389,730.65 and 126,714.15 is: 189,940.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,998.82 : 389,730.65 = 126,714.15 : x
  2. Step 2: Convert to fraction form
    259,998.82/389,730.65 = 126,714.15/x
  3. Step 3: Cross multiply
    259,998.82x = 389,730.65 × 126,714.15
  4. Step 4: Simplify right side
    259,998.82x = 49,384,387,410.13
  5. Step 5: Solve for x
    x = 49,384,387,410.13/259,998.82
  6. Step 6: Final answer
    x = 189,940.82

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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.