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Finding the Fourth Proportional to 324,666.99, 486,738.22 and 135,270

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Solution

The fourth proportional to 324,666.99, 486,738.22 and 135,270 is: 202,795.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,666.99 : 486,738.22 = 135,270 : x
  2. Step 2: Convert to fraction form
    324,666.99/486,738.22 = 135,270/x
  3. Step 3: Cross multiply
    324,666.99x = 486,738.22 × 135,270
  4. Step 4: Simplify right side
    324,666.99x = 65,841,079,019.40
  5. Step 5: Solve for x
    x = 65,841,079,019.40/324,666.99
  6. Step 6: Final answer
    x = 202,795.73

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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.