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Finding the Fourth Proportional to 393,648.57, 543,496.50 and 302,844.33

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Solution

The fourth proportional to 393,648.57, 543,496.50 and 302,844.33 is: 418,126.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,648.57 : 543,496.50 = 302,844.33 : x
  2. Step 2: Convert to fraction form
    393,648.57/543,496.50 = 302,844.33/x
  3. Step 3: Cross multiply
    393,648.57x = 543,496.50 × 302,844.33
  4. Step 4: Simplify right side
    393,648.57x = 164,594,833,399.85
  5. Step 5: Solve for x
    x = 164,594,833,399.85/393,648.57
  6. Step 6: Final answer
    x = 418,126.33

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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.