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Finding the Fourth Proportional to 219,979.50, 303,571.90 and 119,377.50

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Solution

The fourth proportional to 219,979.50, 303,571.90 and 119,377.50 is: 164,741.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,979.50 : 303,571.90 = 119,377.50 : x
  2. Step 2: Convert to fraction form
    219,979.50/303,571.90 = 119,377.50/x
  3. Step 3: Cross multiply
    219,979.50x = 303,571.90 × 119,377.50
  4. Step 4: Simplify right side
    219,979.50x = 36,239,654,492.25
  5. Step 5: Solve for x
    x = 36,239,654,492.25/219,979.50
  6. Step 6: Final answer
    x = 164,741.05

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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.