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Finding the Fourth Proportional to 382,575.80, 528,055.98 and 269,449.40

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Solution

The fourth proportional to 382,575.80, 528,055.98 and 269,449.40 is: 371,911.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,575.80 : 528,055.98 = 269,449.40 : x
  2. Step 2: Convert to fraction form
    382,575.80/528,055.98 = 269,449.40/x
  3. Step 3: Cross multiply
    382,575.80x = 528,055.98 × 269,449.40
  4. Step 4: Simplify right side
    382,575.80x = 142,284,366,977.41
  5. Step 5: Solve for x
    x = 142,284,366,977.41/382,575.80
  6. Step 6: Final answer
    x = 371,911.57

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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.