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Finding the Fourth Proportional to 240,453.36, 360,676.80 and 115,415.28

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Solution

The fourth proportional to 240,453.36, 360,676.80 and 115,415.28 is: 173,121.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,453.36 : 360,676.80 = 115,415.28 : x
  2. Step 2: Convert to fraction form
    240,453.36/360,676.80 = 115,415.28/x
  3. Step 3: Cross multiply
    240,453.36x = 360,676.80 × 115,415.28
  4. Step 4: Simplify right side
    240,453.36x = 41,627,613,861.50
  5. Step 5: Solve for x
    x = 41,627,613,861.50/240,453.36
  6. Step 6: Final answer
    x = 173,121.36

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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.