Home / 213,997.74-320,777.90-139,267.95

Finding the Fourth Proportional to 213,997.74, 320,777.90 and 139,267.95

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Solution

The fourth proportional to 213,997.74, 320,777.90 and 139,267.95 is: 208,759.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,997.74 : 320,777.90 = 139,267.95 : x
  2. Step 2: Convert to fraction form
    213,997.74/320,777.90 = 139,267.95/x
  3. Step 3: Cross multiply
    213,997.74x = 320,777.90 × 139,267.95
  4. Step 4: Simplify right side
    213,997.74x = 44,674,080,538.31
  5. Step 5: Solve for x
    x = 44,674,080,538.31/213,997.74
  6. Step 6: Final answer
    x = 208,759.59

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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.