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Finding the Fourth Proportional to 274,395.59, 411,632.11 and 84,872.55

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Solution

The fourth proportional to 274,395.59, 411,632.11 and 84,872.55 is: 127,320.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,395.59 : 411,632.11 = 84,872.55 : x
  2. Step 2: Convert to fraction form
    274,395.59/411,632.11 = 84,872.55/x
  3. Step 3: Cross multiply
    274,395.59x = 411,632.11 × 84,872.55
  4. Step 4: Simplify right side
    274,395.59x = 34,936,266,837.58
  5. Step 5: Solve for x
    x = 34,936,266,837.58/274,395.59
  6. Step 6: Final answer
    x = 127,320.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.