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Finding the Fourth Proportional to 219,981, 303,573.98 and 119,379

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Solution

The fourth proportional to 219,981, 303,573.98 and 119,379 is: 164,743.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,981 : 303,573.98 = 119,379 : x
  2. Step 2: Convert to fraction form
    219,981/303,573.98 = 119,379/x
  3. Step 3: Cross multiply
    219,981x = 303,573.98 × 119,379
  4. Step 4: Simplify right side
    219,981x = 36,240,358,158.42
  5. Step 5: Solve for x
    x = 36,240,358,158.42/219,981
  6. Step 6: Final answer
    x = 164,743.13

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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.