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Finding the Fourth Proportional to 426,450.96, 640,063.35 and 226,939.32

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Solution

The fourth proportional to 426,450.96, 640,063.35 and 226,939.32 is: 340,614.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,450.96 : 640,063.35 = 226,939.32 : x
  2. Step 2: Convert to fraction form
    426,450.96/640,063.35 = 226,939.32/x
  3. Step 3: Cross multiply
    426,450.96x = 640,063.35 × 226,939.32
  4. Step 4: Simplify right side
    426,450.96x = 145,255,541,405.92
  5. Step 5: Solve for x
    x = 145,255,541,405.92/426,450.96
  6. Step 6: Final answer
    x = 340,614.88

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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.