Home / 378,239.13-521,972.24-217,090.04

Finding the Fourth Proportional to 378,239.13, 521,972.24 and 217,090.04

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Solution

The fourth proportional to 378,239.13, 521,972.24 and 217,090.04 is: 299,585.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,239.13 : 521,972.24 = 217,090.04 : x
  2. Step 2: Convert to fraction form
    378,239.13/521,972.24 = 217,090.04/x
  3. Step 3: Cross multiply
    378,239.13x = 521,972.24 × 217,090.04
  4. Step 4: Simplify right side
    378,239.13x = 113,314,970,765.18
  5. Step 5: Solve for x
    x = 113,314,970,765.18/378,239.13
  6. Step 6: Final answer
    x = 299,585.53

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1.5x scale

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.