Home / 261,289.08-391,950-213,951.24

Finding the Fourth Proportional to 261,289.08, 391,950 and 213,951.24

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Solution

The fourth proportional to 261,289.08, 391,950 and 213,951.24 is: 320,940.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,289.08 : 391,950 = 213,951.24 : x
  2. Step 2: Convert to fraction form
    261,289.08/391,950 = 213,951.24/x
  3. Step 3: Cross multiply
    261,289.08x = 391,950 × 213,951.24
  4. Step 4: Simplify right side
    261,289.08x = 83,858,188,518
  5. Step 5: Solve for x
    x = 83,858,188,518/261,289.08
  6. Step 6: Final answer
    x = 320,940.27

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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.