Home / 259,434.90-389,131.63-115,385.38

Finding the Fourth Proportional to 259,434.90, 389,131.63 and 115,385.38

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Solution

The fourth proportional to 259,434.90, 389,131.63 and 115,385.38 is: 173,068.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,434.90 : 389,131.63 = 115,385.38 : x
  2. Step 2: Convert to fraction form
    259,434.90/389,131.63 = 115,385.38/x
  3. Step 3: Cross multiply
    259,434.90x = 389,131.63 × 115,385.38
  4. Step 4: Simplify right side
    259,434.90x = 44,900,099,736.28
  5. Step 5: Solve for x
    x = 44,900,099,736.28/259,434.90
  6. Step 6: Final answer
    x = 173,068.85

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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.