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Finding the Fourth Proportional to 338,978,648.80, 508,534,328.40 and 144,889,688.80

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Solution

The fourth proportional to 338,978,648.80, 508,534,328.40 and 144,889,688.80 is: 217,362,895.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,978,648.80 : 508,534,328.40 = 144,889,688.80 : x
  2. Step 2: Convert to fraction form
    338,978,648.80/508,534,328.40 = 144,889,688.80/x
  3. Step 3: Cross multiply
    338,978,648.80x = 508,534,328.40 × 144,889,688.80
  4. Step 4: Simplify right side
    338,978,648.80x = 73,681,380,585,993,008
  5. Step 5: Solve for x
    x = 73,681,380,585,993,008/338,978,648.80
  6. Step 6: Final answer
    x = 217,362,895.41

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