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Finding the Fourth Proportional to 274,379.52, 411,585.28 and 105,900.72

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Solution

The fourth proportional to 274,379.52, 411,585.28 and 105,900.72 is: 158,857.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,379.52 : 411,585.28 = 105,900.72 : x
  2. Step 2: Convert to fraction form
    274,379.52/411,585.28 = 105,900.72/x
  3. Step 3: Cross multiply
    274,379.52x = 411,585.28 × 105,900.72
  4. Step 4: Simplify right side
    274,379.52x = 43,587,177,493.40
  5. Step 5: Solve for x
    x = 43,587,177,493.40/274,379.52
  6. Step 6: Final answer
    x = 158,857.26

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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.