Home / 320,901.66-481,500-121,291.38

Finding the Fourth Proportional to 320,901.66, 481,500 and 121,291.38

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Solution

The fourth proportional to 320,901.66, 481,500 and 121,291.38 is: 181,992.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,901.66 : 481,500 = 121,291.38 : x
  2. Step 2: Convert to fraction form
    320,901.66/481,500 = 121,291.38/x
  3. Step 3: Cross multiply
    320,901.66x = 481,500 × 121,291.38
  4. Step 4: Simplify right side
    320,901.66x = 58,401,799,470
  5. Step 5: Solve for x
    x = 58,401,799,470/320,901.66
  6. Step 6: Final answer
    x = 181,992.82

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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.