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Finding the Fourth Proportional to 438,408.95, 657,632.55 and 138,911.60

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Solution

The fourth proportional to 438,408.95, 657,632.55 and 138,911.60 is: 208,373.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,408.95 : 657,632.55 = 138,911.60 : x
  2. Step 2: Convert to fraction form
    438,408.95/657,632.55 = 138,911.60/x
  3. Step 3: Cross multiply
    438,408.95x = 657,632.55 × 138,911.60
  4. Step 4: Simplify right side
    438,408.95x = 91,352,786,444.42
  5. Step 5: Solve for x
    x = 91,352,786,444.42/438,408.95
  6. Step 6: Final answer
    x = 208,373.45

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