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Finding the Fourth Proportional to 275,894.94, 380,741.78 and 155,028.98

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Solution

The fourth proportional to 275,894.94, 380,741.78 and 155,028.98 is: 213,943.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,894.94 : 380,741.78 = 155,028.98 : x
  2. Step 2: Convert to fraction form
    275,894.94/380,741.78 = 155,028.98/x
  3. Step 3: Cross multiply
    275,894.94x = 380,741.78 × 155,028.98
  4. Step 4: Simplify right side
    275,894.94x = 59,026,009,796.78
  5. Step 5: Solve for x
    x = 59,026,009,796.78/275,894.94
  6. Step 6: Final answer
    x = 213,943.79

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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.