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Finding the Fourth Proportional to 274,803, 379,228.14 and 155,571

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Solution

The fourth proportional to 274,803, 379,228.14 and 155,571 is: 214,687.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,803 : 379,228.14 = 155,571 : x
  2. Step 2: Convert to fraction form
    274,803/379,228.14 = 155,571/x
  3. Step 3: Cross multiply
    274,803x = 379,228.14 × 155,571
  4. Step 4: Simplify right side
    274,803x = 58,996,900,967.94
  5. Step 5: Solve for x
    x = 58,996,900,967.94/274,803
  6. Step 6: Final answer
    x = 214,687.98

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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.