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Finding the Fourth Proportional to 482,393.89, 665,615.54 and 278,370.38

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Solution

The fourth proportional to 482,393.89, 665,615.54 and 278,370.38 is: 384,100.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,393.89 : 665,615.54 = 278,370.38 : x
  2. Step 2: Convert to fraction form
    482,393.89/665,615.54 = 278,370.38/x
  3. Step 3: Cross multiply
    482,393.89x = 665,615.54 × 278,370.38
  4. Step 4: Simplify right side
    482,393.89x = 185,287,647,475.63
  5. Step 5: Solve for x
    x = 185,287,647,475.63/482,393.89
  6. Step 6: Final answer
    x = 384,100.32

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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.