Home / 221,365.04-331,850.30-81,090.86

Finding the Fourth Proportional to 221,365.04, 331,850.30 and 81,090.86

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Solution

The fourth proportional to 221,365.04, 331,850.30 and 81,090.86 is: 121,564.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,365.04 : 331,850.30 = 81,090.86 : x
  2. Step 2: Convert to fraction form
    221,365.04/331,850.30 = 81,090.86/x
  3. Step 3: Cross multiply
    221,365.04x = 331,850.30 × 81,090.86
  4. Step 4: Simplify right side
    221,365.04x = 26,910,026,218.26
  5. Step 5: Solve for x
    x = 26,910,026,218.26/221,365.04
  6. Step 6: Final answer
    x = 121,564.03

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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.