Home / 259,987.72-389,723.22-180,935.86

Finding the Fourth Proportional to 259,987.72, 389,723.22 and 180,935.86

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Solution

The fourth proportional to 259,987.72, 389,723.22 and 180,935.86 is: 271,223.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,987.72 : 389,723.22 = 180,935.86 : x
  2. Step 2: Convert to fraction form
    259,987.72/389,723.22 = 180,935.86/x
  3. Step 3: Cross multiply
    259,987.72x = 389,723.22 × 180,935.86
  4. Step 4: Simplify right side
    259,987.72x = 70,514,905,972.67
  5. Step 5: Solve for x
    x = 70,514,905,972.67/259,987.72
  6. Step 6: Final answer
    x = 271,223.99

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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.