Home / 378,742.30-522,666.17-208,976.42

Finding the Fourth Proportional to 378,742.30, 522,666.17 and 208,976.42

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Solution

The fourth proportional to 378,742.30, 522,666.17 and 208,976.42 is: 288,388.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,742.30 : 522,666.17 = 208,976.42 : x
  2. Step 2: Convert to fraction form
    378,742.30/522,666.17 = 208,976.42/x
  3. Step 3: Cross multiply
    378,742.30x = 522,666.17 × 208,976.42
  4. Step 4: Simplify right side
    378,742.30x = 109,224,906,107.16
  5. Step 5: Solve for x
    x = 109,224,906,107.16/378,742.30
  6. Step 6: Final answer
    x = 288,388.46

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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.