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Finding the Fourth Proportional to 287,055, 430,686.18 and 90,063

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Solution

The fourth proportional to 287,055, 430,686.18 and 90,063 is: 135,127.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,055 : 430,686.18 = 90,063 : x
  2. Step 2: Convert to fraction form
    287,055/430,686.18 = 90,063/x
  3. Step 3: Cross multiply
    287,055x = 430,686.18 × 90,063
  4. Step 4: Simplify right side
    287,055x = 38,788,889,429.34
  5. Step 5: Solve for x
    x = 38,788,889,429.34/287,055
  6. Step 6: Final answer
    x = 135,127.03

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