Home / 718,161.42-1,077,399.68-212,761.90

Finding the Fourth Proportional to 718,161.42, 1,077,399.68 and 212,761.90

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Solution

The fourth proportional to 718,161.42, 1,077,399.68 and 212,761.90 is: 319,189.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,161.42 : 1,077,399.68 = 212,761.90 : x
  2. Step 2: Convert to fraction form
    718,161.42/1,077,399.68 = 212,761.90/x
  3. Step 3: Cross multiply
    718,161.42x = 1,077,399.68 × 212,761.90
  4. Step 4: Simplify right side
    718,161.42x = 229,229,602,976.19
  5. Step 5: Solve for x
    x = 229,229,602,976.19/718,161.42
  6. Step 6: Final answer
    x = 319,189.53

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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.