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Finding the Fourth Proportional to 414,908.10, 620,928.55 and 248,815.30

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Solution

The fourth proportional to 414,908.10, 620,928.55 and 248,815.30 is: 372,363.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,908.10 : 620,928.55 = 248,815.30 : x
  2. Step 2: Convert to fraction form
    414,908.10/620,928.55 = 248,815.30/x
  3. Step 3: Cross multiply
    414,908.10x = 620,928.55 × 248,815.30
  4. Step 4: Simplify right side
    414,908.10x = 154,496,523,446.82
  5. Step 5: Solve for x
    x = 154,496,523,446.82/414,908.10
  6. Step 6: Final answer
    x = 372,363.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.