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Finding the Fourth Proportional to 245,993.96, 369,042.78 and 79,769

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Solution

The fourth proportional to 245,993.96, 369,042.78 and 79,769 is: 119,670.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,993.96 : 369,042.78 = 79,769 : x
  2. Step 2: Convert to fraction form
    245,993.96/369,042.78 = 79,769/x
  3. Step 3: Cross multiply
    245,993.96x = 369,042.78 × 79,769
  4. Step 4: Simplify right side
    245,993.96x = 29,438,173,517.82
  5. Step 5: Solve for x
    x = 29,438,173,517.82/245,993.96
  6. Step 6: Final answer
    x = 119,670.31

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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.