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Finding the Fourth Proportional to 390,506.91, 538,892.39 and 220,741.04

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Solution

The fourth proportional to 390,506.91, 538,892.39 and 220,741.04 is: 304,618.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,506.91 : 538,892.39 = 220,741.04 : x
  2. Step 2: Convert to fraction form
    390,506.91/538,892.39 = 220,741.04/x
  3. Step 3: Cross multiply
    390,506.91x = 538,892.39 × 220,741.04
  4. Step 4: Simplify right side
    390,506.91x = 118,955,662,818.52
  5. Step 5: Solve for x
    x = 118,955,662,818.52/390,506.91
  6. Step 6: Final answer
    x = 304,618.59

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