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Finding the Fourth Proportional to 219,178.44, 328,764.08 and 69,418.50

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Solution

The fourth proportional to 219,178.44, 328,764.08 and 69,418.50 is: 104,126.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,178.44 : 328,764.08 = 69,418.50 : x
  2. Step 2: Convert to fraction form
    219,178.44/328,764.08 = 69,418.50/x
  3. Step 3: Cross multiply
    219,178.44x = 328,764.08 × 69,418.50
  4. Step 4: Simplify right side
    219,178.44x = 22,822,309,287.48
  5. Step 5: Solve for x
    x = 22,822,309,287.48/219,178.44
  6. Step 6: Final answer
    x = 104,126.62

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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.