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Finding the Fourth Proportional to 251,361.95, 376,830.38 and 109,100.30

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Solution

The fourth proportional to 251,361.95, 376,830.38 and 109,100.30 is: 163,558.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,361.95 : 376,830.38 = 109,100.30 : x
  2. Step 2: Convert to fraction form
    251,361.95/376,830.38 = 109,100.30/x
  3. Step 3: Cross multiply
    251,361.95x = 376,830.38 × 109,100.30
  4. Step 4: Simplify right side
    251,361.95x = 41,112,307,401.69
  5. Step 5: Solve for x
    x = 41,112,307,401.69/251,361.95
  6. Step 6: Final answer
    x = 163,558.20

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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.