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Finding the Fourth Proportional to 628,057.78, 941,945.16 and 178,768.70

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Solution

The fourth proportional to 628,057.78, 941,945.16 and 178,768.70 is: 268,112.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,057.78 : 941,945.16 = 178,768.70 : x
  2. Step 2: Convert to fraction form
    628,057.78/941,945.16 = 178,768.70/x
  3. Step 3: Cross multiply
    628,057.78x = 941,945.16 × 178,768.70
  4. Step 4: Simplify right side
    628,057.78x = 168,390,307,014.77
  5. Step 5: Solve for x
    x = 168,390,307,014.77/628,057.78
  6. Step 6: Final answer
    x = 268,112.76

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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.