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Finding the Fourth Proportional to 393,817.64, 543,132.42 and 332,858.66

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Solution

The fourth proportional to 393,817.64, 543,132.42 and 332,858.66 is: 459,061.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,817.64 : 543,132.42 = 332,858.66 : x
  2. Step 2: Convert to fraction form
    393,817.64/543,132.42 = 332,858.66/x
  3. Step 3: Cross multiply
    393,817.64x = 543,132.42 × 332,858.66
  4. Step 4: Simplify right side
    393,817.64x = 180,786,329,523.76
  5. Step 5: Solve for x
    x = 180,786,329,523.76/393,817.64
  6. Step 6: Final answer
    x = 459,061.03

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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.