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Finding the Fourth Proportional to 268,401, 370,393.40 and 155,231.04

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Solution

The fourth proportional to 268,401, 370,393.40 and 155,231.04 is: 214,218.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,401 : 370,393.40 = 155,231.04 : x
  2. Step 2: Convert to fraction form
    268,401/370,393.40 = 155,231.04/x
  3. Step 3: Cross multiply
    268,401x = 370,393.40 × 155,231.04
  4. Step 4: Simplify right side
    268,401x = 57,496,552,691.14
  5. Step 5: Solve for x
    x = 57,496,552,691.14/268,401
  6. Step 6: Final answer
    x = 214,218.85

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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.