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Finding the Fourth Proportional to 449,582.73, 620,405.82 and 245,640.72

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Solution

The fourth proportional to 449,582.73, 620,405.82 and 245,640.72 is: 338,974.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,582.73 : 620,405.82 = 245,640.72 : x
  2. Step 2: Convert to fraction form
    449,582.73/620,405.82 = 245,640.72/x
  3. Step 3: Cross multiply
    449,582.73x = 620,405.82 × 245,640.72
  4. Step 4: Simplify right side
    449,582.73x = 152,396,932,316.99
  5. Step 5: Solve for x
    x = 152,396,932,316.99/449,582.73
  6. Step 6: Final answer
    x = 338,974.17

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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.