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Finding the Fourth Proportional to 443,514.40, 665,271.60 and 276,099.55

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Solution

The fourth proportional to 443,514.40, 665,271.60 and 276,099.55 is: 414,149.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,514.40 : 665,271.60 = 276,099.55 : x
  2. Step 2: Convert to fraction form
    443,514.40/665,271.60 = 276,099.55/x
  3. Step 3: Cross multiply
    443,514.40x = 665,271.60 × 276,099.55
  4. Step 4: Simplify right side
    443,514.40x = 183,681,189,387.78
  5. Step 5: Solve for x
    x = 183,681,189,387.78/443,514.40
  6. Step 6: Final answer
    x = 414,149.33

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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.