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Finding the Fourth Proportional to 482,395.39, 665,617.61 and 278,371.88

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Solution

The fourth proportional to 482,395.39, 665,617.61 and 278,371.88 is: 384,102.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,395.39 : 665,617.61 = 278,371.88 : x
  2. Step 2: Convert to fraction form
    482,395.39/665,617.61 = 278,371.88/x
  3. Step 3: Cross multiply
    482,395.39x = 665,617.61 × 278,371.88
  4. Step 4: Simplify right side
    482,395.39x = 185,289,222,128.72
  5. Step 5: Solve for x
    x = 185,289,222,128.72/482,395.39
  6. Step 6: Final answer
    x = 384,102.39

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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.