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Finding the Fourth Proportional to 219,981.20, 303,574.05 and 119,379.20

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Solution

The fourth proportional to 219,981.20, 303,574.05 and 119,379.20 is: 164,743.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,981.20 : 303,574.05 = 119,379.20 : x
  2. Step 2: Convert to fraction form
    219,981.20/303,574.05 = 119,379.20/x
  3. Step 3: Cross multiply
    219,981.20x = 303,574.05 × 119,379.20
  4. Step 4: Simplify right side
    219,981.20x = 36,240,425,711.89
  5. Step 5: Solve for x
    x = 36,240,425,711.89/219,981.20
  6. Step 6: Final answer
    x = 164,743.29

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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.