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Finding the Fourth Proportional to 298,406.26, 447,624.26 and 85,205.80

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Solution

The fourth proportional to 298,406.26, 447,624.26 and 85,205.80 is: 127,812.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,406.26 : 447,624.26 = 85,205.80 : x
  2. Step 2: Convert to fraction form
    298,406.26/447,624.26 = 85,205.80/x
  3. Step 3: Cross multiply
    298,406.26x = 447,624.26 × 85,205.80
  4. Step 4: Simplify right side
    298,406.26x = 38,140,183,172.71
  5. Step 5: Solve for x
    x = 38,140,183,172.71/298,406.26
  6. Step 6: Final answer
    x = 127,812.95

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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.