Home / 378,056.16-521,238.24-248,974.56

Finding the Fourth Proportional to 378,056.16, 521,238.24 and 248,974.56

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Solution

The fourth proportional to 378,056.16, 521,238.24 and 248,974.56 is: 343,269.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,056.16 : 521,238.24 = 248,974.56 : x
  2. Step 2: Convert to fraction form
    378,056.16/521,238.24 = 248,974.56/x
  3. Step 3: Cross multiply
    378,056.16x = 521,238.24 × 248,974.56
  4. Step 4: Simplify right side
    378,056.16x = 129,775,061,459.17
  5. Step 5: Solve for x
    x = 129,775,061,459.17/378,056.16
  6. Step 6: Final answer
    x = 343,269.27

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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.