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Finding the Fourth Proportional to 380,857.77, 525,310.79 and 251,646.57

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Solution

The fourth proportional to 380,857.77, 525,310.79 and 251,646.57 is: 347,091.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,857.77 : 525,310.79 = 251,646.57 : x
  2. Step 2: Convert to fraction form
    380,857.77/525,310.79 = 251,646.57/x
  3. Step 3: Cross multiply
    380,857.77x = 525,310.79 × 251,646.57
  4. Step 4: Simplify right side
    380,857.77x = 132,192,657,229.26
  5. Step 5: Solve for x
    x = 132,192,657,229.26/380,857.77
  6. Step 6: Final answer
    x = 347,091.93

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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.