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Finding the Fourth Proportional to 245,359.44, 368,078.04 and 76,866.48

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Solution

The fourth proportional to 245,359.44, 368,078.04 and 76,866.48 is: 115,311.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,359.44 : 368,078.04 = 76,866.48 : x
  2. Step 2: Convert to fraction form
    245,359.44/368,078.04 = 76,866.48/x
  3. Step 3: Cross multiply
    245,359.44x = 368,078.04 × 76,866.48
  4. Step 4: Simplify right side
    245,359.44x = 28,292,863,300.10
  5. Step 5: Solve for x
    x = 28,292,863,300.10/245,359.44
  6. Step 6: Final answer
    x = 115,311.90

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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.