Home / 320,445.12-480,664.56-225,282.72

Finding the Fourth Proportional to 320,445.12, 480,664.56 and 225,282.72

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Solution

The fourth proportional to 320,445.12, 480,664.56 and 225,282.72 is: 337,921.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,445.12 : 480,664.56 = 225,282.72 : x
  2. Step 2: Convert to fraction form
    320,445.12/480,664.56 = 225,282.72/x
  3. Step 3: Cross multiply
    320,445.12x = 480,664.56 × 225,282.72
  4. Step 4: Simplify right side
    320,445.12x = 108,285,419,484.40
  5. Step 5: Solve for x
    x = 108,285,419,484.40/320,445.12
  6. Step 6: Final answer
    x = 337,921.89

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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.