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Finding the Fourth Proportional to 382,571.80, 528,050.46 and 269,445.40

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Solution

The fourth proportional to 382,571.80, 528,050.46 and 269,445.40 is: 371,906.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,571.80 : 528,050.46 = 269,445.40 : x
  2. Step 2: Convert to fraction form
    382,571.80/528,050.46 = 269,445.40/x
  3. Step 3: Cross multiply
    382,571.80x = 528,050.46 × 269,445.40
  4. Step 4: Simplify right side
    382,571.80x = 142,280,767,414.88
  5. Step 5: Solve for x
    x = 142,280,767,414.88/382,571.80
  6. Step 6: Final answer
    x = 371,906.05

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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.