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Finding the Fourth Proportional to 207,455.20, 310,405.20 and 137,471.20

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Solution

The fourth proportional to 207,455.20, 310,405.20 and 137,471.20 is: 205,691.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,455.20 : 310,405.20 = 137,471.20 : x
  2. Step 2: Convert to fraction form
    207,455.20/310,405.20 = 137,471.20/x
  3. Step 3: Cross multiply
    207,455.20x = 310,405.20 × 137,471.20
  4. Step 4: Simplify right side
    207,455.20x = 42,671,775,330.24
  5. Step 5: Solve for x
    x = 42,671,775,330.24/207,455.20
  6. Step 6: Final answer
    x = 205,691.52

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