Home / 370,682.40-511,536.17-209,531.78

Finding the Fourth Proportional to 370,682.40, 511,536.17 and 209,531.78

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Solution

The fourth proportional to 370,682.40, 511,536.17 and 209,531.78 is: 289,150.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,682.40 : 511,536.17 = 209,531.78 : x
  2. Step 2: Convert to fraction form
    370,682.40/511,536.17 = 209,531.78/x
  3. Step 3: Cross multiply
    370,682.40x = 511,536.17 × 209,531.78
  4. Step 4: Simplify right side
    370,682.40x = 107,183,080,629.14
  5. Step 5: Solve for x
    x = 107,183,080,629.14/370,682.40
  6. Step 6: Final answer
    x = 289,150.71

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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.