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Finding the Fourth Proportional to 379,265.09, 568,901.28 and 154,580

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Solution

The fourth proportional to 379,265.09, 568,901.28 and 154,580 is: 231,871.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,265.09 : 568,901.28 = 154,580 : x
  2. Step 2: Convert to fraction form
    379,265.09/568,901.28 = 154,580/x
  3. Step 3: Cross multiply
    379,265.09x = 568,901.28 × 154,580
  4. Step 4: Simplify right side
    379,265.09x = 87,940,759,862.40
  5. Step 5: Solve for x
    x = 87,940,759,862.40/379,265.09
  6. Step 6: Final answer
    x = 231,871.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.