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Finding the Fourth Proportional to 387,296.46, 534,458.37 and 215,209.98

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Solution

The fourth proportional to 387,296.46, 534,458.37 and 215,209.98 is: 296,983.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,296.46 : 534,458.37 = 215,209.98 : x
  2. Step 2: Convert to fraction form
    387,296.46/534,458.37 = 215,209.98/x
  3. Step 3: Cross multiply
    387,296.46x = 534,458.37 × 215,209.98
  4. Step 4: Simplify right side
    387,296.46x = 115,020,775,118.53
  5. Step 5: Solve for x
    x = 115,020,775,118.53/387,296.46
  6. Step 6: Final answer
    x = 296,983.80

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