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Finding the Fourth Proportional to 319,979.89, 479,997.39 and 83,323.00

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Solution

The fourth proportional to 319,979.89, 479,997.39 and 83,323.00 is: 124,991.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,979.89 : 479,997.39 = 83,323.00 : x
  2. Step 2: Convert to fraction form
    319,979.89/479,997.39 = 83,323.00/x
  3. Step 3: Cross multiply
    319,979.89x = 479,997.39 × 83,323.00
  4. Step 4: Simplify right side
    319,979.89x = 39,994,820,126.98
  5. Step 5: Solve for x
    x = 39,994,820,126.98/319,979.89
  6. Step 6: Final answer
    x = 124,991.67

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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.