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Finding the Fourth Proportional to 199,320.60, 298,980.90 and 163,891.20

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Solution

The fourth proportional to 199,320.60, 298,980.90 and 163,891.20 is: 245,836.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,320.60 : 298,980.90 = 163,891.20 : x
  2. Step 2: Convert to fraction form
    199,320.60/298,980.90 = 163,891.20/x
  3. Step 3: Cross multiply
    199,320.60x = 298,980.90 × 163,891.20
  4. Step 4: Simplify right side
    199,320.60x = 49,000,338,478.08
  5. Step 5: Solve for x
    x = 49,000,338,478.08/199,320.60
  6. Step 6: Final answer
    x = 245,836.80

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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.