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Finding the Fourth Proportional to 318,869.48, 478,331.75 and 82,210.16

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Solution

The fourth proportional to 318,869.48, 478,331.75 and 82,210.16 is: 123,322.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,869.48 : 478,331.75 = 82,210.16 : x
  2. Step 2: Convert to fraction form
    318,869.48/478,331.75 = 82,210.16/x
  3. Step 3: Cross multiply
    318,869.48x = 478,331.75 × 82,210.16
  4. Step 4: Simplify right side
    318,869.48x = 39,323,729,700.58
  5. Step 5: Solve for x
    x = 39,323,729,700.58/318,869.48
  6. Step 6: Final answer
    x = 123,322.34

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