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Finding the Fourth Proportional to 382,672.96, 528,088.68 and 212,907.04

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Solution

The fourth proportional to 382,672.96, 528,088.68 and 212,907.04 is: 293,811.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,672.96 : 528,088.68 = 212,907.04 : x
  2. Step 2: Convert to fraction form
    382,672.96/528,088.68 = 212,907.04/x
  3. Step 3: Cross multiply
    382,672.96x = 528,088.68 × 212,907.04
  4. Step 4: Simplify right side
    382,672.96x = 112,433,797,716.31
  5. Step 5: Solve for x
    x = 112,433,797,716.31/382,672.96
  6. Step 6: Final answer
    x = 293,811.71

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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.