Home / 378,866.24-522,839.04-209,096.72

Finding the Fourth Proportional to 378,866.24, 522,839.04 and 209,096.72

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Solution

The fourth proportional to 378,866.24, 522,839.04 and 209,096.72 is: 288,555.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,866.24 : 522,839.04 = 209,096.72 : x
  2. Step 2: Convert to fraction form
    378,866.24/522,839.04 = 209,096.72/x
  3. Step 3: Cross multiply
    378,866.24x = 522,839.04 × 209,096.72
  4. Step 4: Simplify right side
    378,866.24x = 109,323,928,351.95
  5. Step 5: Solve for x
    x = 109,323,928,351.95/378,866.24
  6. Step 6: Final answer
    x = 288,555.48

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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.