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Finding the Fourth Proportional to 245,745.87, 368,668.02 and 77,308.59

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Solution

The fourth proportional to 245,745.87, 368,668.02 and 77,308.59 is: 115,978.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,745.87 : 368,668.02 = 77,308.59 : x
  2. Step 2: Convert to fraction form
    245,745.87/368,668.02 = 77,308.59/x
  3. Step 3: Cross multiply
    245,745.87x = 368,668.02 × 77,308.59
  4. Step 4: Simplify right side
    245,745.87x = 28,501,206,476.70
  5. Step 5: Solve for x
    x = 28,501,206,476.70/245,745.87
  6. Step 6: Final answer
    x = 115,978.38

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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.