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Finding the Fourth Proportional to 279,373.70, 419,125.62 and 79,696.82

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Solution

The fourth proportional to 279,373.70, 419,125.62 and 79,696.82 is: 119,563.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,373.70 : 419,125.62 = 79,696.82 : x
  2. Step 2: Convert to fraction form
    279,373.70/419,125.62 = 79,696.82/x
  3. Step 3: Cross multiply
    279,373.70x = 419,125.62 × 79,696.82
  4. Step 4: Simplify right side
    279,373.70x = 33,402,979,094.53
  5. Step 5: Solve for x
    x = 33,402,979,094.53/279,373.70
  6. Step 6: Final answer
    x = 119,563.79

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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.