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Finding the Fourth Proportional to 324,645.67, 487,142.59 and 135,236.89

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Solution

The fourth proportional to 324,645.67, 487,142.59 and 135,236.89 is: 202,927.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,645.67 : 487,142.59 = 135,236.89 : x
  2. Step 2: Convert to fraction form
    324,645.67/487,142.59 = 135,236.89/x
  3. Step 3: Cross multiply
    324,645.67x = 487,142.59 × 135,236.89
  4. Step 4: Simplify right side
    324,645.67x = 65,879,648,858.15
  5. Step 5: Solve for x
    x = 65,879,648,858.15/324,645.67
  6. Step 6: Final answer
    x = 202,927.85

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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.