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Finding the Fourth Proportional to 274,491.54, 378,711.96 and 153,613.62

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Solution

The fourth proportional to 274,491.54, 378,711.96 and 153,613.62 is: 211,938.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,491.54 : 378,711.96 = 153,613.62 : x
  2. Step 2: Convert to fraction form
    274,491.54/378,711.96 = 153,613.62/x
  3. Step 3: Cross multiply
    274,491.54x = 378,711.96 × 153,613.62
  4. Step 4: Simplify right side
    274,491.54x = 58,175,315,112.90
  5. Step 5: Solve for x
    x = 58,175,315,112.90/274,491.54
  6. Step 6: Final answer
    x = 211,938.46

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1.5x scale

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.