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Finding the Fourth Proportional to 212,805.72, 319,255.26 and 63,057.66

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Solution

The fourth proportional to 212,805.72, 319,255.26 and 63,057.66 is: 94,600.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,805.72 : 319,255.26 = 63,057.66 : x
  2. Step 2: Convert to fraction form
    212,805.72/319,255.26 = 63,057.66/x
  3. Step 3: Cross multiply
    212,805.72x = 319,255.26 × 63,057.66
  4. Step 4: Simplify right side
    212,805.72x = 20,131,489,638.29
  5. Step 5: Solve for x
    x = 20,131,489,638.29/212,805.72
  6. Step 6: Final answer
    x = 94,600.32

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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.