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Finding the Fourth Proportional to 329,104, 493,656 and 79,786

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Solution

The fourth proportional to 329,104, 493,656 and 79,786 is: 119,679

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,104 : 493,656 = 79,786 : x
  2. Step 2: Convert to fraction form
    329,104/493,656 = 79,786/x
  3. Step 3: Cross multiply
    329,104x = 493,656 × 79,786
  4. Step 4: Simplify right side
    329,104x = 39,386,837,616
  5. Step 5: Solve for x
    x = 39,386,837,616/329,104
  6. Step 6: Final answer
    x = 119,679

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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.