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Finding the Fourth Proportional to 508,212.20, 701,285.94 and 281,813.96

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Solution

The fourth proportional to 508,212.20, 701,285.94 and 281,813.96 is: 388,877.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,212.20 : 701,285.94 = 281,813.96 : x
  2. Step 2: Convert to fraction form
    508,212.20/701,285.94 = 281,813.96/x
  3. Step 3: Cross multiply
    508,212.20x = 701,285.94 × 281,813.96
  4. Step 4: Simplify right side
    508,212.20x = 197,632,167,843.72
  5. Step 5: Solve for x
    x = 197,632,167,843.72/508,212.20
  6. Step 6: Final answer
    x = 388,877.26

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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.