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Finding the Fourth Proportional to 486,349.20, 671,144.40 and 305,158.68

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Solution

The fourth proportional to 486,349.20, 671,144.40 and 305,158.68 is: 421,108.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,349.20 : 671,144.40 = 305,158.68 : x
  2. Step 2: Convert to fraction form
    486,349.20/671,144.40 = 305,158.68/x
  3. Step 3: Cross multiply
    486,349.20x = 671,144.40 × 305,158.68
  4. Step 4: Simplify right side
    486,349.20x = 204,805,539,193.39
  5. Step 5: Solve for x
    x = 204,805,539,193.39/486,349.20
  6. Step 6: Final answer
    x = 421,108.00

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