Home / 378,038.37-521,342.54-275,902.06

Finding the Fourth Proportional to 378,038.37, 521,342.54 and 275,902.06

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Solution

The fourth proportional to 378,038.37, 521,342.54 and 275,902.06 is: 380,489.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,038.37 : 521,342.54 = 275,902.06 : x
  2. Step 2: Convert to fraction form
    378,038.37/521,342.54 = 275,902.06/x
  3. Step 3: Cross multiply
    378,038.37x = 521,342.54 × 275,902.06
  4. Step 4: Simplify right side
    378,038.37x = 143,839,476,765.41
  5. Step 5: Solve for x
    x = 143,839,476,765.41/378,038.37
  6. Step 6: Final answer
    x = 380,489.09

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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.