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Finding the Fourth Proportional to 219,807.62, 303,354.67 and 138,149.15

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Solution

The fourth proportional to 219,807.62, 303,354.67 and 138,149.15 is: 190,658.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,807.62 : 303,354.67 = 138,149.15 : x
  2. Step 2: Convert to fraction form
    219,807.62/303,354.67 = 138,149.15/x
  3. Step 3: Cross multiply
    219,807.62x = 303,354.67 × 138,149.15
  4. Step 4: Simplify right side
    219,807.62x = 41,908,188,205.91
  5. Step 5: Solve for x
    x = 41,908,188,205.91/219,807.62
  6. Step 6: Final answer
    x = 190,658.48

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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.