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Finding the Fourth Proportional to 373,078.37, 514,915.31 and 220,107.74

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Solution

The fourth proportional to 373,078.37, 514,915.31 and 220,107.74 is: 303,788.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,078.37 : 514,915.31 = 220,107.74 : x
  2. Step 2: Convert to fraction form
    373,078.37/514,915.31 = 220,107.74/x
  3. Step 3: Cross multiply
    373,078.37x = 514,915.31 × 220,107.74
  4. Step 4: Simplify right side
    373,078.37x = 113,336,845,175.50
  5. Step 5: Solve for x
    x = 113,336,845,175.50/373,078.37
  6. Step 6: Final answer
    x = 303,788.30

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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.