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Finding the Fourth Proportional to 324,999.39, 487,509.87 and 111,765.20

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Solution

The fourth proportional to 324,999.39, 487,509.87 and 111,765.20 is: 167,651.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,999.39 : 487,509.87 = 111,765.20 : x
  2. Step 2: Convert to fraction form
    324,999.39/487,509.87 = 111,765.20/x
  3. Step 3: Cross multiply
    324,999.39x = 487,509.87 × 111,765.20
  4. Step 4: Simplify right side
    324,999.39x = 54,486,635,684.97
  5. Step 5: Solve for x
    x = 54,486,635,684.97/324,999.39
  6. Step 6: Final answer
    x = 167,651.50

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1.5x scale

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.