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Finding the Fourth Proportional to 388.76, 536.49 and 214.10

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Solution

The fourth proportional to 388.76, 536.49 and 214.10 is: 295.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    388.76 : 536.49 = 214.10 : x
  2. Step 2: Convert to fraction form
    388.76/536.49 = 214.10/x
  3. Step 3: Cross multiply
    388.76x = 536.49 × 214.10
  4. Step 4: Simplify right side
    388.76x = 114,862.51
  5. Step 5: Solve for x
    x = 114,862.51/388.76
  6. Step 6: Final answer
    x = 295.46

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