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Finding the Fourth Proportional to 219,015.82, 328,544.48 and 61,244.28

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Solution

The fourth proportional to 219,015.82, 328,544.48 and 61,244.28 is: 91,872.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,015.82 : 328,544.48 = 61,244.28 : x
  2. Step 2: Convert to fraction form
    219,015.82/328,544.48 = 61,244.28/x
  3. Step 3: Cross multiply
    219,015.82x = 328,544.48 × 61,244.28
  4. Step 4: Simplify right side
    219,015.82x = 20,121,470,125.57
  5. Step 5: Solve for x
    x = 20,121,470,125.57/219,015.82
  6. Step 6: Final answer
    x = 91,872.22

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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.