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Finding the Fourth Proportional to 262,104.36, 393,156.84 and 79,736.65

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Solution

The fourth proportional to 262,104.36, 393,156.84 and 79,736.65 is: 119,605.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,104.36 : 393,156.84 = 79,736.65 : x
  2. Step 2: Convert to fraction form
    262,104.36/393,156.84 = 79,736.65/x
  3. Step 3: Cross multiply
    262,104.36x = 393,156.84 × 79,736.65
  4. Step 4: Simplify right side
    262,104.36x = 31,349,010,425.29
  5. Step 5: Solve for x
    x = 31,349,010,425.29/262,104.36
  6. Step 6: Final answer
    x = 119,605.07

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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.