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Finding the Fourth Proportional to 298,636.40, 447,781.80 and 111,666.80

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Solution

The fourth proportional to 298,636.40, 447,781.80 and 111,666.80 is: 167,435.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,636.40 : 447,781.80 = 111,666.80 : x
  2. Step 2: Convert to fraction form
    298,636.40/447,781.80 = 111,666.80/x
  3. Step 3: Cross multiply
    298,636.40x = 447,781.80 × 111,666.80
  4. Step 4: Simplify right side
    298,636.40x = 50,002,360,704.24
  5. Step 5: Solve for x
    x = 50,002,360,704.24/298,636.40
  6. Step 6: Final answer
    x = 167,435.59

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1.5x scale

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.