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Finding the Fourth Proportional to 274,620.90, 411,975.80 and 85,036.71

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Solution

The fourth proportional to 274,620.90, 411,975.80 and 85,036.71 is: 127,568.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,620.90 : 411,975.80 = 85,036.71 : x
  2. Step 2: Convert to fraction form
    274,620.90/411,975.80 = 85,036.71/x
  3. Step 3: Cross multiply
    274,620.90x = 411,975.80 × 85,036.71
  4. Step 4: Simplify right side
    274,620.90x = 35,033,066,206.43
  5. Step 5: Solve for x
    x = 35,033,066,206.43/274,620.90
  6. Step 6: Final answer
    x = 127,568.83

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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.