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Finding the Fourth Proportional to 373,378.58, 515,111.90 and 216,111.03

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Solution

The fourth proportional to 373,378.58, 515,111.90 and 216,111.03 is: 298,146.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,378.58 : 515,111.90 = 216,111.03 : x
  2. Step 2: Convert to fraction form
    373,378.58/515,111.90 = 216,111.03/x
  3. Step 3: Cross multiply
    373,378.58x = 515,111.90 × 216,111.03
  4. Step 4: Simplify right side
    373,378.58x = 111,321,362,193.70
  5. Step 5: Solve for x
    x = 111,321,362,193.70/373,378.58
  6. Step 6: Final answer
    x = 298,146.09

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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.