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Finding the Fourth Proportional to 268,860.78, 403,351.93 and 88,945.78

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Solution

The fourth proportional to 268,860.78, 403,351.93 and 88,945.78 is: 133,438.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,860.78 : 403,351.93 = 88,945.78 : x
  2. Step 2: Convert to fraction form
    268,860.78/403,351.93 = 88,945.78/x
  3. Step 3: Cross multiply
    268,860.78x = 403,351.93 × 88,945.78
  4. Step 4: Simplify right side
    268,860.78x = 35,876,453,611.38
  5. Step 5: Solve for x
    x = 35,876,453,611.38/268,860.78
  6. Step 6: Final answer
    x = 133,438.78

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1.5x scale

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.