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Finding the Fourth Proportional to 253,010.20, 379,140 and 103,067.32

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Solution

The fourth proportional to 253,010.20, 379,140 and 103,067.32 is: 154,448.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,010.20 : 379,140 = 103,067.32 : x
  2. Step 2: Convert to fraction form
    253,010.20/379,140 = 103,067.32/x
  3. Step 3: Cross multiply
    253,010.20x = 379,140 × 103,067.32
  4. Step 4: Simplify right side
    253,010.20x = 39,076,943,704.80
  5. Step 5: Solve for x
    x = 39,076,943,704.80/253,010.20
  6. Step 6: Final answer
    x = 154,448.10

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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.