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Finding the Fourth Proportional to 438,863.80, 605,873.07 and 275,690.50

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Solution

The fourth proportional to 438,863.80, 605,873.07 and 275,690.50 is: 380,604.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,863.80 : 605,873.07 = 275,690.50 : x
  2. Step 2: Convert to fraction form
    438,863.80/605,873.07 = 275,690.50/x
  3. Step 3: Cross multiply
    438,863.80x = 605,873.07 × 275,690.50
  4. Step 4: Simplify right side
    438,863.80x = 167,033,449,604.84
  5. Step 5: Solve for x
    x = 167,033,449,604.84/438,863.80
  6. Step 6: Final answer
    x = 380,604.30

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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.