Home / 320,607.17-481,021.28-143,236.61

Finding the Fourth Proportional to 320,607.17, 481,021.28 and 143,236.61

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Solution

The fourth proportional to 320,607.17, 481,021.28 and 143,236.61 is: 214,904.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,607.17 : 481,021.28 = 143,236.61 : x
  2. Step 2: Convert to fraction form
    320,607.17/481,021.28 = 143,236.61/x
  3. Step 3: Cross multiply
    320,607.17x = 481,021.28 × 143,236.61
  4. Step 4: Simplify right side
    320,607.17x = 68,899,856,768.88
  5. Step 5: Solve for x
    x = 68,899,856,768.88/320,607.17
  6. Step 6: Final answer
    x = 214,904.29

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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.