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Finding the Fourth Proportional to 382,671.96, 528,087.30 and 212,906.04

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Solution

The fourth proportional to 382,671.96, 528,087.30 and 212,906.04 is: 293,810.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,671.96 : 528,087.30 = 212,906.04 : x
  2. Step 2: Convert to fraction form
    382,671.96/528,087.30 = 212,906.04/x
  3. Step 3: Cross multiply
    382,671.96x = 528,087.30 × 212,906.04
  4. Step 4: Simplify right side
    382,671.96x = 112,432,975,817.29
  5. Step 5: Solve for x
    x = 112,432,975,817.29/382,671.96
  6. Step 6: Final answer
    x = 293,810.33

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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.