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Finding the Fourth Proportional to 298,968.40, 448,625.40 and 111,998.80

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Solution

The fourth proportional to 298,968.40, 448,625.40 and 111,998.80 is: 168,062.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,968.40 : 448,625.40 = 111,998.80 : x
  2. Step 2: Convert to fraction form
    298,968.40/448,625.40 = 111,998.80/x
  3. Step 3: Cross multiply
    298,968.40x = 448,625.40 × 111,998.80
  4. Step 4: Simplify right side
    298,968.40x = 50,245,506,449.52
  5. Step 5: Solve for x
    x = 50,245,506,449.52/298,968.40
  6. Step 6: Final answer
    x = 168,062.93

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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.