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Finding the Fourth Proportional to 408,376.94, 612,594.59 and 108,855.95

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Solution

The fourth proportional to 408,376.94, 612,594.59 and 108,855.95 is: 163,291.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,376.94 : 612,594.59 = 108,855.95 : x
  2. Step 2: Convert to fraction form
    408,376.94/612,594.59 = 108,855.95/x
  3. Step 3: Cross multiply
    408,376.94x = 612,594.59 × 108,855.95
  4. Step 4: Simplify right side
    408,376.94x = 66,684,562,452.06
  5. Step 5: Solve for x
    x = 66,684,562,452.06/408,376.94
  6. Step 6: Final answer
    x = 163,291.70

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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.