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Finding the Fourth Proportional to 407,168.78, 561,893.58 and 225,880.72

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Solution

The fourth proportional to 407,168.78, 561,893.58 and 225,880.72 is: 311,715.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,168.78 : 561,893.58 = 225,880.72 : x
  2. Step 2: Convert to fraction form
    407,168.78/561,893.58 = 225,880.72/x
  3. Step 3: Cross multiply
    407,168.78x = 561,893.58 × 225,880.72
  4. Step 4: Simplify right side
    407,168.78x = 126,920,922,474.91
  5. Step 5: Solve for x
    x = 126,920,922,474.91/407,168.78
  6. Step 6: Final answer
    x = 311,715.75

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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.