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Finding the Fourth Proportional to 199,853.20, 299,123.70 and 155,238.40

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Solution

The fourth proportional to 199,853.20, 299,123.70 and 155,238.40 is: 232,347.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,853.20 : 299,123.70 = 155,238.40 : x
  2. Step 2: Convert to fraction form
    199,853.20/299,123.70 = 155,238.40/x
  3. Step 3: Cross multiply
    199,853.20x = 299,123.70 × 155,238.40
  4. Step 4: Simplify right side
    199,853.20x = 46,435,484,590.08
  5. Step 5: Solve for x
    x = 46,435,484,590.08/199,853.20
  6. Step 6: Final answer
    x = 232,347.97

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