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Finding the Fourth Proportional to 450,978.57, 622,326.33 and 247,018.95

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Solution

The fourth proportional to 450,978.57, 622,326.33 and 247,018.95 is: 340,872.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,978.57 : 622,326.33 = 247,018.95 : x
  2. Step 2: Convert to fraction form
    450,978.57/622,326.33 = 247,018.95/x
  3. Step 3: Cross multiply
    450,978.57x = 622,326.33 × 247,018.95
  4. Step 4: Simplify right side
    450,978.57x = 153,726,396,593.95
  5. Step 5: Solve for x
    x = 153,726,396,593.95/450,978.57
  6. Step 6: Final answer
    x = 340,872.95

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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.