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Finding the Fourth Proportional to 212,788.29, 319,229.16 and 63,040.31

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Solution

The fourth proportional to 212,788.29, 319,229.16 and 63,040.31 is: 94,574.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,788.29 : 319,229.16 = 63,040.31 : x
  2. Step 2: Convert to fraction form
    212,788.29/319,229.16 = 63,040.31/x
  3. Step 3: Cross multiply
    212,788.29x = 319,229.16 × 63,040.31
  4. Step 4: Simplify right side
    212,788.29x = 20,124,305,207.44
  5. Step 5: Solve for x
    x = 20,124,305,207.44/212,788.29
  6. Step 6: Final answer
    x = 94,574.31

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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.