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Finding the Fourth Proportional to 309,274.81, 426,791.99 and 181,958.59

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Solution

The fourth proportional to 309,274.81, 426,791.99 and 181,958.59 is: 251,098.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,274.81 : 426,791.99 = 181,958.59 : x
  2. Step 2: Convert to fraction form
    309,274.81/426,791.99 = 181,958.59/x
  3. Step 3: Cross multiply
    309,274.81x = 426,791.99 × 181,958.59
  4. Step 4: Simplify right side
    309,274.81x = 77,658,468,723.69
  5. Step 5: Solve for x
    x = 77,658,468,723.69/309,274.81
  6. Step 6: Final answer
    x = 251,098.59

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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.