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Finding the Fourth Proportional to 331,570.90, 497,411.43 and 131,893.21

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Solution

The fourth proportional to 331,570.90, 497,411.43 and 131,893.21 is: 197,861.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,570.90 : 497,411.43 = 131,893.21 : x
  2. Step 2: Convert to fraction form
    331,570.90/497,411.43 = 131,893.21/x
  3. Step 3: Cross multiply
    331,570.90x = 497,411.43 × 131,893.21
  4. Step 4: Simplify right side
    331,570.90x = 65,605,190,193.39
  5. Step 5: Solve for x
    x = 65,605,190,193.39/331,570.90
  6. Step 6: Final answer
    x = 197,861.72

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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.