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Finding the Fourth Proportional to 415,906.56, 623,915.44 and 145,970.64

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Solution

The fourth proportional to 415,906.56, 623,915.44 and 145,970.64 is: 218,975.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,906.56 : 623,915.44 = 145,970.64 : x
  2. Step 2: Convert to fraction form
    415,906.56/623,915.44 = 145,970.64/x
  3. Step 3: Cross multiply
    415,906.56x = 623,915.44 × 145,970.64
  4. Step 4: Simplify right side
    415,906.56x = 91,073,336,082.68
  5. Step 5: Solve for x
    x = 91,073,336,082.68/415,906.56
  6. Step 6: Final answer
    x = 218,975.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.