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Finding the Fourth Proportional to 274,496.66, 378,805.33 and 153,637.94

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Solution

The fourth proportional to 274,496.66, 378,805.33 and 153,637.94 is: 212,020.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,496.66 : 378,805.33 = 153,637.94 : x
  2. Step 2: Convert to fraction form
    274,496.66/378,805.33 = 153,637.94/x
  3. Step 3: Cross multiply
    274,496.66x = 378,805.33 × 153,637.94
  4. Step 4: Simplify right side
    274,496.66x = 58,198,869,231.11
  5. Step 5: Solve for x
    x = 58,198,869,231.11/274,496.66
  6. Step 6: Final answer
    x = 212,020.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.