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Finding the Fourth Proportional to 290,615.84, 435,931.94 and 80,253.78

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Solution

The fourth proportional to 290,615.84, 435,931.94 and 80,253.78 is: 120,382.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,615.84 : 435,931.94 = 80,253.78 : x
  2. Step 2: Convert to fraction form
    290,615.84/435,931.94 = 80,253.78/x
  3. Step 3: Cross multiply
    290,615.84x = 435,931.94 × 80,253.78
  4. Step 4: Simplify right side
    290,615.84x = 34,985,186,007.73
  5. Step 5: Solve for x
    x = 34,985,186,007.73/290,615.84
  6. Step 6: Final answer
    x = 120,382.93

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