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Finding the Fourth Proportional to 387,628.88, 581,689.60 and 200,640.48

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Solution

The fourth proportional to 387,628.88, 581,689.60 and 200,640.48 is: 301,088.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,628.88 : 581,689.60 = 200,640.48 : x
  2. Step 2: Convert to fraction form
    387,628.88/581,689.60 = 200,640.48/x
  3. Step 3: Cross multiply
    387,628.88x = 581,689.60 × 200,640.48
  4. Step 4: Simplify right side
    387,628.88x = 116,710,480,555.01
  5. Step 5: Solve for x
    x = 116,710,480,555.01/387,628.88
  6. Step 6: Final answer
    x = 301,088.20

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