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Finding the Fourth Proportional to 603,655.11, 905,479.43 and 154,375.25

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Solution

The fourth proportional to 603,655.11, 905,479.43 and 154,375.25 is: 231,562.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,655.11 : 905,479.43 = 154,375.25 : x
  2. Step 2: Convert to fraction form
    603,655.11/905,479.43 = 154,375.25/x
  3. Step 3: Cross multiply
    603,655.11x = 905,479.43 × 154,375.25
  4. Step 4: Simplify right side
    603,655.11x = 139,783,608,076.83
  5. Step 5: Solve for x
    x = 139,783,608,076.83/603,655.11
  6. Step 6: Final answer
    x = 231,562.04

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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.