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Finding the Fourth Proportional to 372,777.81, 514,408.91 and 219,808.60

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Solution

The fourth proportional to 372,777.81, 514,408.91 and 219,808.60 is: 303,321.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,777.81 : 514,408.91 = 219,808.60 : x
  2. Step 2: Convert to fraction form
    372,777.81/514,408.91 = 219,808.60/x
  3. Step 3: Cross multiply
    372,777.81x = 514,408.91 × 219,808.60
  4. Step 4: Simplify right side
    372,777.81x = 113,071,504,079.53
  5. Step 5: Solve for x
    x = 113,071,504,079.53/372,777.81
  6. Step 6: Final answer
    x = 303,321.44

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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.