Home / 259,749.11-389,623.64-131,645.45

Finding the Fourth Proportional to 259,749.11, 389,623.64 and 131,645.45

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Solution

The fourth proportional to 259,749.11, 389,623.64 and 131,645.45 is: 197,468.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,749.11 : 389,623.64 = 131,645.45 : x
  2. Step 2: Convert to fraction form
    259,749.11/389,623.64 = 131,645.45/x
  3. Step 3: Cross multiply
    259,749.11x = 389,623.64 × 131,645.45
  4. Step 4: Simplify right side
    259,749.11x = 51,292,179,734.27
  5. Step 5: Solve for x
    x = 51,292,179,734.27/259,749.11
  6. Step 6: Final answer
    x = 197,468.16

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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.