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Finding the Fourth Proportional to 289,734.78, 434,492.94 and 121,266.78

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Solution

The fourth proportional to 289,734.78, 434,492.94 and 121,266.78 is: 181,854.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,734.78 : 434,492.94 = 121,266.78 : x
  2. Step 2: Convert to fraction form
    289,734.78/434,492.94 = 121,266.78/x
  3. Step 3: Cross multiply
    289,734.78x = 434,492.94 × 121,266.78
  4. Step 4: Simplify right side
    289,734.78x = 52,689,559,766.53
  5. Step 5: Solve for x
    x = 52,689,559,766.53/289,734.78
  6. Step 6: Final answer
    x = 181,854.45

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