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Finding the Fourth Proportional to 274,828, 379,262.68 and 155,596

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Solution

The fourth proportional to 274,828, 379,262.68 and 155,596 is: 214,722.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,828 : 379,262.68 = 155,596 : x
  2. Step 2: Convert to fraction form
    274,828/379,262.68 = 155,596/x
  3. Step 3: Cross multiply
    274,828x = 379,262.68 × 155,596
  4. Step 4: Simplify right side
    274,828x = 59,011,755,957.28
  5. Step 5: Solve for x
    x = 59,011,755,957.28/274,828
  6. Step 6: Final answer
    x = 214,722.50

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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.