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Finding the Fourth Proportional to 268,640.84, 370,736.82 and 155,441.64

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Solution

The fourth proportional to 268,640.84, 370,736.82 and 155,441.64 is: 214,516.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,640.84 : 370,736.82 = 155,441.64 : x
  2. Step 2: Convert to fraction form
    268,640.84/370,736.82 = 155,441.64/x
  3. Step 3: Cross multiply
    268,640.84x = 370,736.82 × 155,441.64
  4. Step 4: Simplify right side
    268,640.84x = 57,627,939,309.18
  5. Step 5: Solve for x
    x = 57,627,939,309.18/268,640.84
  6. Step 6: Final answer
    x = 214,516.67

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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.