Home / 257,078.10-385,709.59-114,911.56

Finding the Fourth Proportional to 257,078.10, 385,709.59 and 114,911.56

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Solution

The fourth proportional to 257,078.10, 385,709.59 and 114,911.56 is: 172,408.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,078.10 : 385,709.59 = 114,911.56 : x
  2. Step 2: Convert to fraction form
    257,078.10/385,709.59 = 114,911.56/x
  3. Step 3: Cross multiply
    257,078.10x = 385,709.59 × 114,911.56
  4. Step 4: Simplify right side
    257,078.10x = 44,322,488,765.31
  5. Step 5: Solve for x
    x = 44,322,488,765.31/257,078.10
  6. Step 6: Final answer
    x = 172,408.65

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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.