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Finding the Fourth Proportional to 320,580.40, 481,043.40 and 133,610.80

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Solution

The fourth proportional to 320,580.40, 481,043.40 and 133,610.80 is: 200,488.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,580.40 : 481,043.40 = 133,610.80 : x
  2. Step 2: Convert to fraction form
    320,580.40/481,043.40 = 133,610.80/x
  3. Step 3: Cross multiply
    320,580.40x = 481,043.40 × 133,610.80
  4. Step 4: Simplify right side
    320,580.40x = 64,272,593,508.72
  5. Step 5: Solve for x
    x = 64,272,593,508.72/320,580.40
  6. Step 6: Final answer
    x = 200,488.22

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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.