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Finding the Fourth Proportional to 302,049.40, 453,138.90 and 91,708.60

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Solution

The fourth proportional to 302,049.40, 453,138.90 and 91,708.60 is: 137,582.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,049.40 : 453,138.90 = 91,708.60 : x
  2. Step 2: Convert to fraction form
    302,049.40/453,138.90 = 91,708.60/x
  3. Step 3: Cross multiply
    302,049.40x = 453,138.90 × 91,708.60
  4. Step 4: Simplify right side
    302,049.40x = 41,556,734,124.54
  5. Step 5: Solve for x
    x = 41,556,734,124.54/302,049.40
  6. Step 6: Final answer
    x = 137,582.57

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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.