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Finding the Fourth Proportional to 358,879.21, 494,572.23 and 256,727.53

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Solution

The fourth proportional to 358,879.21, 494,572.23 and 256,727.53 is: 353,796.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,879.21 : 494,572.23 = 256,727.53 : x
  2. Step 2: Convert to fraction form
    358,879.21/494,572.23 = 256,727.53/x
  3. Step 3: Cross multiply
    358,879.21x = 494,572.23 × 256,727.53
  4. Step 4: Simplify right side
    358,879.21x = 126,970,304,850.74
  5. Step 5: Solve for x
    x = 126,970,304,850.74/358,879.21
  6. Step 6: Final answer
    x = 353,796.77

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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.