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Finding the Fourth Proportional to 373,379.53, 515,113.20 and 216,111.99

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Solution

The fourth proportional to 373,379.53, 515,113.20 and 216,111.99 is: 298,147.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,379.53 : 515,113.20 = 216,111.99 : x
  2. Step 2: Convert to fraction form
    373,379.53/515,113.20 = 216,111.99/x
  3. Step 3: Cross multiply
    373,379.53x = 515,113.20 × 216,111.99
  4. Step 4: Simplify right side
    373,379.53x = 111,322,138,727.27
  5. Step 5: Solve for x
    x = 111,322,138,727.27/373,379.53
  6. Step 6: Final answer
    x = 298,147.41

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.