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Finding the Fourth Proportional to 245,705.99, 368,388 and 108,854.78

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Solution

The fourth proportional to 245,705.99, 368,388 and 108,854.78 is: 163,206.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,705.99 : 368,388 = 108,854.78 : x
  2. Step 2: Convert to fraction form
    245,705.99/368,388 = 108,854.78/x
  3. Step 3: Cross multiply
    245,705.99x = 368,388 × 108,854.78
  4. Step 4: Simplify right side
    245,705.99x = 40,100,792,852.70
  5. Step 5: Solve for x
    x = 40,100,792,852.70/245,705.99
  6. Step 6: Final answer
    x = 163,206.41

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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.