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Finding the Fourth Proportional to 449,590.10, 620,427.10 and 245,636.64

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Solution

The fourth proportional to 449,590.10, 620,427.10 and 245,636.64 is: 338,974.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,590.10 : 620,427.10 = 245,636.64 : x
  2. Step 2: Convert to fraction form
    449,590.10/620,427.10 = 245,636.64/x
  3. Step 3: Cross multiply
    449,590.10x = 620,427.10 × 245,636.64
  4. Step 4: Simplify right side
    449,590.10x = 152,399,627,364.57
  5. Step 5: Solve for x
    x = 152,399,627,364.57/449,590.10
  6. Step 6: Final answer
    x = 338,974.61

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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.