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Finding the Fourth Proportional to 393,914.54, 590,085.41 and 303,641.66

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Solution

The fourth proportional to 393,914.54, 590,085.41 and 303,641.66 is: 454,856.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,914.54 : 590,085.41 = 303,641.66 : x
  2. Step 2: Convert to fraction form
    393,914.54/590,085.41 = 303,641.66/x
  3. Step 3: Cross multiply
    393,914.54x = 590,085.41 × 303,641.66
  4. Step 4: Simplify right side
    393,914.54x = 179,174,513,391.19
  5. Step 5: Solve for x
    x = 179,174,513,391.19/393,914.54
  6. Step 6: Final answer
    x = 454,856.31

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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.