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Finding the Fourth Proportional to 415,912.62, 623,868.94 and 100,369.56

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Solution

The fourth proportional to 415,912.62, 623,868.94 and 100,369.56 is: 150,554.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,912.62 : 623,868.94 = 100,369.56 : x
  2. Step 2: Convert to fraction form
    415,912.62/623,868.94 = 100,369.56/x
  3. Step 3: Cross multiply
    415,912.62x = 623,868.94 × 100,369.56
  4. Step 4: Simplify right side
    415,912.62x = 62,617,451,005.47
  5. Step 5: Solve for x
    x = 62,617,451,005.47/415,912.62
  6. Step 6: Final answer
    x = 150,554.34

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1.5x scale

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.