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Finding the Fourth Proportional to 253,010.25, 379,186.11 and 103,074.93

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Solution

The fourth proportional to 253,010.25, 379,186.11 and 103,074.93 is: 154,478.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,010.25 : 379,186.11 = 103,074.93 : x
  2. Step 2: Convert to fraction form
    253,010.25/379,186.11 = 103,074.93/x
  3. Step 3: Cross multiply
    253,010.25x = 379,186.11 × 103,074.93
  4. Step 4: Simplify right side
    253,010.25x = 39,084,581,745.22
  5. Step 5: Solve for x
    x = 39,084,581,745.22/253,010.25
  6. Step 6: Final answer
    x = 154,478.25

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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.