Home / 259,539.75-389,367.27-79,650.18

Finding the Fourth Proportional to 259,539.75, 389,367.27 and 79,650.18

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Solution

The fourth proportional to 259,539.75, 389,367.27 and 79,650.18 is: 119,492.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,539.75 : 389,367.27 = 79,650.18 : x
  2. Step 2: Convert to fraction form
    259,539.75/389,367.27 = 79,650.18/x
  3. Step 3: Cross multiply
    259,539.75x = 389,367.27 × 79,650.18
  4. Step 4: Simplify right side
    259,539.75x = 31,013,173,141.61
  5. Step 5: Solve for x
    x = 31,013,173,141.61/259,539.75
  6. Step 6: Final answer
    x = 119,492.96

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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.