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Finding the Fourth Proportional to 439,361.76, 606,384 and 278,231.52

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Solution

The fourth proportional to 439,361.76, 606,384 and 278,231.52 is: 384,000.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,361.76 : 606,384 = 278,231.52 : x
  2. Step 2: Convert to fraction form
    439,361.76/606,384 = 278,231.52/x
  3. Step 3: Cross multiply
    439,361.76x = 606,384 × 278,231.52
  4. Step 4: Simplify right side
    439,361.76x = 168,715,142,023.68
  5. Step 5: Solve for x
    x = 168,715,142,023.68/439,361.76
  6. Step 6: Final answer
    x = 384,000.51

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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.