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Finding the Fourth Proportional to 268,794.78, 370,936.70 and 155,615.10

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Solution

The fourth proportional to 268,794.78, 370,936.70 and 155,615.10 is: 214,748.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,794.78 : 370,936.70 = 155,615.10 : x
  2. Step 2: Convert to fraction form
    268,794.78/370,936.70 = 155,615.10/x
  3. Step 3: Cross multiply
    268,794.78x = 370,936.70 × 155,615.10
  4. Step 4: Simplify right side
    268,794.78x = 57,723,351,664.17
  5. Step 5: Solve for x
    x = 57,723,351,664.17/268,794.78
  6. Step 6: Final answer
    x = 214,748.78

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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.