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Finding the Fourth Proportional to 312,272.25, 468,421.34 and 90,656.25

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Solution

The fourth proportional to 312,272.25, 468,421.34 and 90,656.25 is: 135,988.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,272.25 : 468,421.34 = 90,656.25 : x
  2. Step 2: Convert to fraction form
    312,272.25/468,421.34 = 90,656.25/x
  3. Step 3: Cross multiply
    312,272.25x = 468,421.34 × 90,656.25
  4. Step 4: Simplify right side
    312,272.25x = 42,465,321,651.09
  5. Step 5: Solve for x
    x = 42,465,321,651.09/312,272.25
  6. Step 6: Final answer
    x = 135,988.14

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