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Finding the Fourth Proportional to 274,418.48, 411,643.92 and 105,939.92

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Solution

The fourth proportional to 274,418.48, 411,643.92 and 105,939.92 is: 158,916.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,418.48 : 411,643.92 = 105,939.92 : x
  2. Step 2: Convert to fraction form
    274,418.48/411,643.92 = 105,939.92/x
  3. Step 3: Cross multiply
    274,418.48x = 411,643.92 × 105,939.92
  4. Step 4: Simplify right side
    274,418.48x = 43,609,523,953.29
  5. Step 5: Solve for x
    x = 43,609,523,953.29/274,418.48
  6. Step 6: Final answer
    x = 158,916.13

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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.