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Finding the Fourth Proportional to 310,081.70, 465,122.55 and 215,603.30

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Solution

The fourth proportional to 310,081.70, 465,122.55 and 215,603.30 is: 323,404.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,081.70 : 465,122.55 = 215,603.30 : x
  2. Step 2: Convert to fraction form
    310,081.70/465,122.55 = 215,603.30/x
  3. Step 3: Cross multiply
    310,081.70x = 465,122.55 × 215,603.30
  4. Step 4: Simplify right side
    310,081.70x = 100,281,956,684.42
  5. Step 5: Solve for x
    x = 100,281,956,684.42/310,081.70
  6. Step 6: Final answer
    x = 323,404.95

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