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Finding the Fourth Proportional to 219,481.50, 328,968.11 and 100,903.98

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Solution

The fourth proportional to 219,481.50, 328,968.11 and 100,903.98 is: 151,239.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,481.50 : 328,968.11 = 100,903.98 : x
  2. Step 2: Convert to fraction form
    219,481.50/328,968.11 = 100,903.98/x
  3. Step 3: Cross multiply
    219,481.50x = 328,968.11 × 100,903.98
  4. Step 4: Simplify right side
    219,481.50x = 33,194,189,442.72
  5. Step 5: Solve for x
    x = 33,194,189,442.72/219,481.50
  6. Step 6: Final answer
    x = 151,239.13

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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.