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Finding the Fourth Proportional to 268,664.21, 370,809.60 and 154,019.84

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Solution

The fourth proportional to 268,664.21, 370,809.60 and 154,019.84 is: 212,577.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,664.21 : 370,809.60 = 154,019.84 : x
  2. Step 2: Convert to fraction form
    268,664.21/370,809.60 = 154,019.84/x
  3. Step 3: Cross multiply
    268,664.21x = 370,809.60 × 154,019.84
  4. Step 4: Simplify right side
    268,664.21x = 57,112,033,408.42
  5. Step 5: Solve for x
    x = 57,112,033,408.42/268,664.21
  6. Step 6: Final answer
    x = 212,577.75

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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.