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Finding the Fourth Proportional to 274,771.71, 379,174.59 and 153,907.02

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Solution

The fourth proportional to 274,771.71, 379,174.59 and 153,907.02 is: 212,385.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,771.71 : 379,174.59 = 153,907.02 : x
  2. Step 2: Convert to fraction form
    274,771.71/379,174.59 = 153,907.02/x
  3. Step 3: Cross multiply
    274,771.71x = 379,174.59 × 153,907.02
  4. Step 4: Simplify right side
    274,771.71x = 58,357,631,206.62
  5. Step 5: Solve for x
    x = 58,357,631,206.62/274,771.71
  6. Step 6: Final answer
    x = 212,385.88

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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.