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Finding the Fourth Proportional to 299,286.60, 448,677.06 and 139,279.97

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Solution

The fourth proportional to 299,286.60, 448,677.06 and 139,279.97 is: 208,802.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,286.60 : 448,677.06 = 139,279.97 : x
  2. Step 2: Convert to fraction form
    299,286.60/448,677.06 = 139,279.97/x
  3. Step 3: Cross multiply
    299,286.60x = 448,677.06 × 139,279.97
  4. Step 4: Simplify right side
    299,286.60x = 62,491,725,213.10
  5. Step 5: Solve for x
    x = 62,491,725,213.10/299,286.60
  6. Step 6: Final answer
    x = 208,802.28

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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.