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Finding the Fourth Proportional to 493,879.80, 740,852.10 and 138,905.40

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Solution

The fourth proportional to 493,879.80, 740,852.10 and 138,905.40 is: 208,367.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,879.80 : 740,852.10 = 138,905.40 : x
  2. Step 2: Convert to fraction form
    493,879.80/740,852.10 = 138,905.40/x
  3. Step 3: Cross multiply
    493,879.80x = 740,852.10 × 138,905.40
  4. Step 4: Simplify right side
    493,879.80x = 102,908,357,291.34
  5. Step 5: Solve for x
    x = 102,908,357,291.34/493,879.80
  6. Step 6: Final answer
    x = 208,367.21

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