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Finding the Fourth Proportional to 391,288.05, 586,715.81 and 121,341.33

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Solution

The fourth proportional to 391,288.05, 586,715.81 and 121,341.33 is: 181,944.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,288.05 : 586,715.81 = 121,341.33 : x
  2. Step 2: Convert to fraction form
    391,288.05/586,715.81 = 121,341.33/x
  3. Step 3: Cross multiply
    391,288.05x = 586,715.81 × 121,341.33
  4. Step 4: Simplify right side
    391,288.05x = 71,192,876,110.72
  5. Step 5: Solve for x
    x = 71,192,876,110.72/391,288.05
  6. Step 6: Final answer
    x = 181,944.93

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