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Finding the Fourth Proportional to 245,751.38, 368,715.80 and 85,850.94

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Solution

The fourth proportional to 245,751.38, 368,715.80 and 85,850.94 is: 128,807.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,751.38 : 368,715.80 = 85,850.94 : x
  2. Step 2: Convert to fraction form
    245,751.38/368,715.80 = 85,850.94/x
  3. Step 3: Cross multiply
    245,751.38x = 368,715.80 × 85,850.94
  4. Step 4: Simplify right side
    245,751.38x = 31,654,598,022.85
  5. Step 5: Solve for x
    x = 31,654,598,022.85/245,751.38
  6. Step 6: Final answer
    x = 128,807.41

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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.