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Finding the Fourth Proportional to 274,703.61, 379,072.94 and 153,817.19

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Solution

The fourth proportional to 274,703.61, 379,072.94 and 153,817.19 is: 212,257.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,703.61 : 379,072.94 = 153,817.19 : x
  2. Step 2: Convert to fraction form
    274,703.61/379,072.94 = 153,817.19/x
  3. Step 3: Cross multiply
    274,703.61x = 379,072.94 × 153,817.19
  4. Step 4: Simplify right side
    274,703.61x = 58,307,934,435.84
  5. Step 5: Solve for x
    x = 58,307,934,435.84/274,703.61
  6. Step 6: Final answer
    x = 212,257.62

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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.