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Finding the Fourth Proportional to 223,395.80, 335,136.90 and 65,629.40

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Solution

The fourth proportional to 223,395.80, 335,136.90 and 65,629.40 is: 98,456.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,395.80 : 335,136.90 = 65,629.40 : x
  2. Step 2: Convert to fraction form
    223,395.80/335,136.90 = 65,629.40/x
  3. Step 3: Cross multiply
    223,395.80x = 335,136.90 × 65,629.40
  4. Step 4: Simplify right side
    223,395.80x = 21,994,833,664.86
  5. Step 5: Solve for x
    x = 21,994,833,664.86/223,395.80
  6. Step 6: Final answer
    x = 98,456.79

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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.