Home / 378,299.16-522,056.34-208,539.36

Finding the Fourth Proportional to 378,299.16, 522,056.34 and 208,539.36

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Solution

The fourth proportional to 378,299.16, 522,056.34 and 208,539.36 is: 287,786.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,299.16 : 522,056.34 = 208,539.36 : x
  2. Step 2: Convert to fraction form
    378,299.16/522,056.34 = 208,539.36/x
  3. Step 3: Cross multiply
    378,299.16x = 522,056.34 × 208,539.36
  4. Step 4: Simplify right side
    378,299.16x = 108,869,295,027.54
  5. Step 5: Solve for x
    x = 108,869,295,027.54/378,299.16
  6. Step 6: Final answer
    x = 287,786.25

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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.