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Finding the Fourth Proportional to 380,751.64, 525,437.36 and 208,676.44

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Solution

The fourth proportional to 380,751.64, 525,437.36 and 208,676.44 is: 287,973.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,751.64 : 525,437.36 = 208,676.44 : x
  2. Step 2: Convert to fraction form
    380,751.64/525,437.36 = 208,676.44/x
  3. Step 3: Cross multiply
    380,751.64x = 525,437.36 × 208,676.44
  4. Step 4: Simplify right side
    380,751.64x = 109,646,399,297.56
  5. Step 5: Solve for x
    x = 109,646,399,297.56/380,751.64
  6. Step 6: Final answer
    x = 287,973.54

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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.