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Finding the Fourth Proportional to 451,018.47, 622,169.49 and 278,881.39

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Solution

The fourth proportional to 451,018.47, 622,169.49 and 278,881.39 is: 384,710.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,018.47 : 622,169.49 = 278,881.39 : x
  2. Step 2: Convert to fraction form
    451,018.47/622,169.49 = 278,881.39/x
  3. Step 3: Cross multiply
    451,018.47x = 622,169.49 × 278,881.39
  4. Step 4: Simplify right side
    451,018.47x = 173,511,492,186.79
  5. Step 5: Solve for x
    x = 173,511,492,186.79/451,018.47
  6. Step 6: Final answer
    x = 384,710.39

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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.