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Finding the Fourth Proportional to 414,948.60, 620,989.30 and 248,855.80

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Solution

The fourth proportional to 414,948.60, 620,989.30 and 248,855.80 is: 372,423.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,948.60 : 620,989.30 = 248,855.80 : x
  2. Step 2: Convert to fraction form
    414,948.60/620,989.30 = 248,855.80/x
  3. Step 3: Cross multiply
    414,948.60x = 620,989.30 × 248,855.80
  4. Step 4: Simplify right side
    414,948.60x = 154,536,789,042.94
  5. Step 5: Solve for x
    x = 154,536,789,042.94/414,948.60
  6. Step 6: Final answer
    x = 372,423.93

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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.