Home / 320,621.60-480,975.96-133,589.36

Finding the Fourth Proportional to 320,621.60, 480,975.96 and 133,589.36

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Solution

The fourth proportional to 320,621.60, 480,975.96 and 133,589.36 is: 200,402.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,621.60 : 480,975.96 = 133,589.36 : x
  2. Step 2: Convert to fraction form
    320,621.60/480,975.96 = 133,589.36/x
  3. Step 3: Cross multiply
    320,621.60x = 480,975.96 × 133,589.36
  4. Step 4: Simplify right side
    320,621.60x = 64,253,270,671.79
  5. Step 5: Solve for x
    x = 64,253,270,671.79/320,621.60
  6. Step 6: Final answer
    x = 200,402.19

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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.