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Finding the Fourth Proportional to 402,446.60, 555,373.06 and 218,683.56

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Solution

The fourth proportional to 402,446.60, 555,373.06 and 218,683.56 is: 301,781.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,446.60 : 555,373.06 = 218,683.56 : x
  2. Step 2: Convert to fraction form
    402,446.60/555,373.06 = 218,683.56/x
  3. Step 3: Cross multiply
    402,446.60x = 555,373.06 × 218,683.56
  4. Step 4: Simplify right side
    402,446.60x = 121,450,957,888.89
  5. Step 5: Solve for x
    x = 121,450,957,888.89/402,446.60
  6. Step 6: Final answer
    x = 301,781.55

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