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Finding the Fourth Proportional to 380,561.67, 525,175.33 and 208,485.89

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Solution

The fourth proportional to 380,561.67, 525,175.33 and 208,485.89 is: 287,710.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,561.67 : 525,175.33 = 208,485.89 : x
  2. Step 2: Convert to fraction form
    380,561.67/525,175.33 = 208,485.89/x
  3. Step 3: Cross multiply
    380,561.67x = 525,175.33 × 208,485.89
  4. Step 4: Simplify right side
    380,561.67x = 109,491,646,081.09
  5. Step 5: Solve for x
    x = 109,491,646,081.09/380,561.67
  6. Step 6: Final answer
    x = 287,710.65

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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.