Home / 320,712.40-481,077.24-143,177.68

Finding the Fourth Proportional to 320,712.40, 481,077.24 and 143,177.68

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Solution

The fourth proportional to 320,712.40, 481,077.24 and 143,177.68 is: 214,770.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,712.40 : 481,077.24 = 143,177.68 : x
  2. Step 2: Convert to fraction form
    320,712.40/481,077.24 = 143,177.68/x
  3. Step 3: Cross multiply
    320,712.40x = 481,077.24 × 143,177.68
  4. Step 4: Simplify right side
    320,712.40x = 68,879,523,124.00
  5. Step 5: Solve for x
    x = 68,879,523,124.00/320,712.40
  6. Step 6: Final answer
    x = 214,770.38

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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.