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Finding the Fourth Proportional to 268,997.78, 371,218.04 and 154,280.84

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Solution

The fourth proportional to 268,997.78, 371,218.04 and 154,280.84 is: 212,908.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,997.78 : 371,218.04 = 154,280.84 : x
  2. Step 2: Convert to fraction form
    268,997.78/371,218.04 = 154,280.84/x
  3. Step 3: Cross multiply
    268,997.78x = 371,218.04 × 154,280.84
  4. Step 4: Simplify right side
    268,997.78x = 57,271,831,034.35
  5. Step 5: Solve for x
    x = 57,271,831,034.35/268,997.78
  6. Step 6: Final answer
    x = 212,908.19

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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.