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Finding the Fourth Proportional to 373,643.15, 515,638.94 and 212,521.41

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Solution

The fourth proportional to 373,643.15, 515,638.94 and 212,521.41 is: 293,286.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,643.15 : 515,638.94 = 212,521.41 : x
  2. Step 2: Convert to fraction form
    373,643.15/515,638.94 = 212,521.41/x
  3. Step 3: Cross multiply
    373,643.15x = 515,638.94 × 212,521.41
  4. Step 4: Simplify right side
    373,643.15x = 109,584,313,517.10
  5. Step 5: Solve for x
    x = 109,584,313,517.10/373,643.15
  6. Step 6: Final answer
    x = 293,286.03

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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.