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Finding the Fourth Proportional to 279,351.32, 418,957.61 and 79,673.45

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Solution

The fourth proportional to 279,351.32, 418,957.61 and 79,673.45 is: 119,490.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,351.32 : 418,957.61 = 79,673.45 : x
  2. Step 2: Convert to fraction form
    279,351.32/418,957.61 = 79,673.45/x
  3. Step 3: Cross multiply
    279,351.32x = 418,957.61 × 79,673.45
  4. Step 4: Simplify right side
    279,351.32x = 33,379,795,699.30
  5. Step 5: Solve for x
    x = 33,379,795,699.30/279,351.32
  6. Step 6: Final answer
    x = 119,490.38

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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.