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Finding the Fourth Proportional to 438,577.54, 605,070.26 and 275,164.80

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Solution

The fourth proportional to 438,577.54, 605,070.26 and 275,164.80 is: 379,622.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,577.54 : 605,070.26 = 275,164.80 : x
  2. Step 2: Convert to fraction form
    438,577.54/605,070.26 = 275,164.80/x
  3. Step 3: Cross multiply
    438,577.54x = 605,070.26 × 275,164.80
  4. Step 4: Simplify right side
    438,577.54x = 166,494,037,078.85
  5. Step 5: Solve for x
    x = 166,494,037,078.85/438,577.54
  6. Step 6: Final answer
    x = 379,622.81

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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.