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Finding the Fourth Proportional to 309,251.81, 426,760.26 and 181,935.59

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Solution

The fourth proportional to 309,251.81, 426,760.26 and 181,935.59 is: 251,066.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,251.81 : 426,760.26 = 181,935.59 : x
  2. Step 2: Convert to fraction form
    309,251.81/426,760.26 = 181,935.59/x
  3. Step 3: Cross multiply
    309,251.81x = 426,760.26 × 181,935.59
  4. Step 4: Simplify right side
    309,251.81x = 77,642,879,691.65
  5. Step 5: Solve for x
    x = 77,642,879,691.65/309,251.81
  6. Step 6: Final answer
    x = 251,066.86

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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.