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Finding the Fourth Proportional to 298,055.53, 447,280.26 and 140,329.09

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Solution

The fourth proportional to 298,055.53, 447,280.26 and 140,329.09 is: 210,586.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,055.53 : 447,280.26 = 140,329.09 : x
  2. Step 2: Convert to fraction form
    298,055.53/447,280.26 = 140,329.09/x
  3. Step 3: Cross multiply
    298,055.53x = 447,280.26 × 140,329.09
  4. Step 4: Simplify right side
    298,055.53x = 62,766,431,860.76
  5. Step 5: Solve for x
    x = 62,766,431,860.76/298,055.53
  6. Step 6: Final answer
    x = 210,586.37

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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.