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Finding the Fourth Proportional to 329,815.53, 455,144.60 and 178,912.53

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Solution

The fourth proportional to 329,815.53, 455,144.60 and 178,912.53 is: 246,898.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,815.53 : 455,144.60 = 178,912.53 : x
  2. Step 2: Convert to fraction form
    329,815.53/455,144.60 = 178,912.53/x
  3. Step 3: Cross multiply
    329,815.53x = 455,144.60 × 178,912.53
  4. Step 4: Simplify right side
    329,815.53x = 81,431,072,349.12
  5. Step 5: Solve for x
    x = 81,431,072,349.12/329,815.53
  6. Step 6: Final answer
    x = 246,898.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.