Home / 320,749.31-481,230.81-107,538.32

Finding the Fourth Proportional to 320,749.31, 481,230.81 and 107,538.32

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Solution

The fourth proportional to 320,749.31, 481,230.81 and 107,538.32 is: 161,343.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,749.31 : 481,230.81 = 107,538.32 : x
  2. Step 2: Convert to fraction form
    320,749.31/481,230.81 = 107,538.32/x
  3. Step 3: Cross multiply
    320,749.31x = 481,230.81 × 107,538.32
  4. Step 4: Simplify right side
    320,749.31x = 51,750,752,839.64
  5. Step 5: Solve for x
    x = 51,750,752,839.64/320,749.31
  6. Step 6: Final answer
    x = 161,343.30

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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.