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Finding the Fourth Proportional to 482,283.11, 665,581.71 and 278,342.63

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Solution

The fourth proportional to 482,283.11, 665,581.71 and 278,342.63 is: 384,130.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,283.11 : 665,581.71 = 278,342.63 : x
  2. Step 2: Convert to fraction form
    482,283.11/665,581.71 = 278,342.63/x
  3. Step 3: Cross multiply
    482,283.11x = 665,581.71 × 278,342.63
  4. Step 4: Simplify right side
    482,283.11x = 185,259,762,287.43
  5. Step 5: Solve for x
    x = 185,259,762,287.43/482,283.11
  6. Step 6: Final answer
    x = 384,130.73

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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.