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Finding the Fourth Proportional to 333,412, 500,118 and 99,940

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Solution

The fourth proportional to 333,412, 500,118 and 99,940 is: 149,910

Step by Step Solution

  1. Step 1: Write the proportion equation
    333,412 : 500,118 = 99,940 : x
  2. Step 2: Convert to fraction form
    333,412/500,118 = 99,940/x
  3. Step 3: Cross multiply
    333,412x = 500,118 × 99,940
  4. Step 4: Simplify right side
    333,412x = 49,981,792,920
  5. Step 5: Solve for x
    x = 49,981,792,920/333,412
  6. Step 6: Final answer
    x = 149,910

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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.