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Finding the Fourth Proportional to 401,569.12, 602,409.22 and 135,405.76

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Solution

The fourth proportional to 401,569.12, 602,409.22 and 135,405.76 is: 203,127.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,569.12 : 602,409.22 = 135,405.76 : x
  2. Step 2: Convert to fraction form
    401,569.12/602,409.22 = 135,405.76/x
  3. Step 3: Cross multiply
    401,569.12x = 602,409.22 × 135,405.76
  4. Step 4: Simplify right side
    401,569.12x = 81,569,678,265.11
  5. Step 5: Solve for x
    x = 81,569,678,265.11/401,569.12
  6. Step 6: Final answer
    x = 203,127.37

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