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Finding the Fourth Proportional to 219,896.42, 303,489.64 and 139,331.44

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Solution

The fourth proportional to 219,896.42, 303,489.64 and 139,331.44 is: 192,298.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,896.42 : 303,489.64 = 139,331.44 : x
  2. Step 2: Convert to fraction form
    219,896.42/303,489.64 = 139,331.44/x
  3. Step 3: Cross multiply
    219,896.42x = 303,489.64 × 139,331.44
  4. Step 4: Simplify right side
    219,896.42x = 42,285,648,566.28
  5. Step 5: Solve for x
    x = 42,285,648,566.28/219,896.42
  6. Step 6: Final answer
    x = 192,298.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.