Home / 426,343.42-639,578.31-141,941.08

Finding the Fourth Proportional to 426,343.42, 639,578.31 and 141,941.08

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Solution

The fourth proportional to 426,343.42, 639,578.31 and 141,941.08 is: 212,932.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,343.42 : 639,578.31 = 141,941.08 : x
  2. Step 2: Convert to fraction form
    426,343.42/639,578.31 = 141,941.08/x
  3. Step 3: Cross multiply
    426,343.42x = 639,578.31 × 141,941.08
  4. Step 4: Simplify right side
    426,343.42x = 90,782,436,065.97
  5. Step 5: Solve for x
    x = 90,782,436,065.97/426,343.42
  6. Step 6: Final answer
    x = 212,932.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.