Home / 275,140.24-379,716.06-161,985.40

Finding the Fourth Proportional to 275,140.24, 379,716.06 and 161,985.40

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Solution

The fourth proportional to 275,140.24, 379,716.06 and 161,985.40 is: 223,553.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,140.24 : 379,716.06 = 161,985.40 : x
  2. Step 2: Convert to fraction form
    275,140.24/379,716.06 = 161,985.40/x
  3. Step 3: Cross multiply
    275,140.24x = 379,716.06 × 161,985.40
  4. Step 4: Simplify right side
    275,140.24x = 61,508,457,865.52
  5. Step 5: Solve for x
    x = 61,508,457,865.52/275,140.24
  6. Step 6: Final answer
    x = 223,553.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.