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Finding the Fourth Proportional to 421,506.51, 632,337.77 and 133,390.70

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Solution

The fourth proportional to 421,506.51, 632,337.77 and 133,390.70 is: 200,110.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,506.51 : 632,337.77 = 133,390.70 : x
  2. Step 2: Convert to fraction form
    421,506.51/632,337.77 = 133,390.70/x
  3. Step 3: Cross multiply
    421,506.51x = 632,337.77 × 133,390.70
  4. Step 4: Simplify right side
    421,506.51x = 84,347,979,691.06
  5. Step 5: Solve for x
    x = 84,347,979,691.06/421,506.51
  6. Step 6: Final answer
    x = 200,110.74

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