Home / 214,605.30-321,907.98-81,485.66

Finding the Fourth Proportional to 214,605.30, 321,907.98 and 81,485.66

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Solution

The fourth proportional to 214,605.30, 321,907.98 and 81,485.66 is: 122,228.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,605.30 : 321,907.98 = 81,485.66 : x
  2. Step 2: Convert to fraction form
    214,605.30/321,907.98 = 81,485.66/x
  3. Step 3: Cross multiply
    214,605.30x = 321,907.98 × 81,485.66
  4. Step 4: Simplify right side
    214,605.30x = 26,230,884,209.57
  5. Step 5: Solve for x
    x = 26,230,884,209.57/214,605.30
  6. Step 6: Final answer
    x = 122,228.50

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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.