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Finding the Fourth Proportional to 274,256.81, 411,192.03 and 105,635.87

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Solution

The fourth proportional to 274,256.81, 411,192.03 and 105,635.87 is: 158,379.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,256.81 : 411,192.03 = 105,635.87 : x
  2. Step 2: Convert to fraction form
    274,256.81/411,192.03 = 105,635.87/x
  3. Step 3: Cross multiply
    274,256.81x = 411,192.03 × 105,635.87
  4. Step 4: Simplify right side
    274,256.81x = 43,436,627,826.12
  5. Step 5: Solve for x
    x = 43,436,627,826.12/274,256.81
  6. Step 6: Final answer
    x = 158,379.40

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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.