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Finding the Fourth Proportional to 500,309.96, 690,422.91 and 270,861.38

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Solution

The fourth proportional to 500,309.96, 690,422.91 and 270,861.38 is: 373,786.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,309.96 : 690,422.91 = 270,861.38 : x
  2. Step 2: Convert to fraction form
    500,309.96/690,422.91 = 270,861.38/x
  3. Step 3: Cross multiply
    500,309.96x = 690,422.91 × 270,861.38
  4. Step 4: Simplify right side
    500,309.96x = 187,008,902,186.22
  5. Step 5: Solve for x
    x = 187,008,902,186.22/500,309.96
  6. Step 6: Final answer
    x = 373,786.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.