Home / 257,979.96-387,080.82-133,408.44

Finding the Fourth Proportional to 257,979.96, 387,080.82 and 133,408.44

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Solution

The fourth proportional to 257,979.96, 387,080.82 and 133,408.44 is: 200,170.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,979.96 : 387,080.82 = 133,408.44 : x
  2. Step 2: Convert to fraction form
    257,979.96/387,080.82 = 133,408.44/x
  3. Step 3: Cross multiply
    257,979.96x = 387,080.82 × 133,408.44
  4. Step 4: Simplify right side
    257,979.96x = 51,639,848,350.12
  5. Step 5: Solve for x
    x = 51,639,848,350.12/257,979.96
  6. Step 6: Final answer
    x = 200,170.00

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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.