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Finding the Fourth Proportional to 380,555.75, 525,167.57 and 208,469.96

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Solution

The fourth proportional to 380,555.75, 525,167.57 and 208,469.96 is: 287,688.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,555.75 : 525,167.57 = 208,469.96 : x
  2. Step 2: Convert to fraction form
    380,555.75/525,167.57 = 208,469.96/x
  3. Step 3: Cross multiply
    380,555.75x = 525,167.57 × 208,469.96
  4. Step 4: Simplify right side
    380,555.75x = 109,481,661,268.85
  5. Step 5: Solve for x
    x = 109,481,661,268.85/380,555.75
  6. Step 6: Final answer
    x = 287,688.89

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1.5x scale

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.