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Finding the Fourth Proportional to 312,451, 468,756.42 and 90,835

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Solution

The fourth proportional to 312,451, 468,756.42 and 90,835 is: 136,275.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,451 : 468,756.42 = 90,835 : x
  2. Step 2: Convert to fraction form
    312,451/468,756.42 = 90,835/x
  3. Step 3: Cross multiply
    312,451x = 468,756.42 × 90,835
  4. Step 4: Simplify right side
    312,451x = 42,579,489,410.70
  5. Step 5: Solve for x
    x = 42,579,489,410.70/312,451
  6. Step 6: Final answer
    x = 136,275.73

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