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Finding the Fourth Proportional to 219,489.72, 329,234.73 and 61,718.19

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Solution

The fourth proportional to 219,489.72, 329,234.73 and 61,718.19 is: 92,577.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,489.72 : 329,234.73 = 61,718.19 : x
  2. Step 2: Convert to fraction form
    219,489.72/329,234.73 = 61,718.19/x
  3. Step 3: Cross multiply
    219,489.72x = 329,234.73 × 61,718.19
  4. Step 4: Simplify right side
    219,489.72x = 20,319,770,154.67
  5. Step 5: Solve for x
    x = 20,319,770,154.67/219,489.72
  6. Step 6: Final answer
    x = 92,577.32

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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.