Home / 320,207.85-480,321.50-109,842.75

Finding the Fourth Proportional to 320,207.85, 480,321.50 and 109,842.75

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Solution

The fourth proportional to 320,207.85, 480,321.50 and 109,842.75 is: 164,767.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,207.85 : 480,321.50 = 109,842.75 : x
  2. Step 2: Convert to fraction form
    320,207.85/480,321.50 = 109,842.75/x
  3. Step 3: Cross multiply
    320,207.85x = 480,321.50 × 109,842.75
  4. Step 4: Simplify right side
    320,207.85x = 52,759,833,894.91
  5. Step 5: Solve for x
    x = 52,759,833,894.91/320,207.85
  6. Step 6: Final answer
    x = 164,767.46

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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.