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Finding the Fourth Proportional to 398,747.99, 550,136.18 and 226,648.55

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Solution

The fourth proportional to 398,747.99, 550,136.18 and 226,648.55 is: 312,697.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,747.99 : 550,136.18 = 226,648.55 : x
  2. Step 2: Convert to fraction form
    398,747.99/550,136.18 = 226,648.55/x
  3. Step 3: Cross multiply
    398,747.99x = 550,136.18 × 226,648.55
  4. Step 4: Simplify right side
    398,747.99x = 124,687,565,315.48
  5. Step 5: Solve for x
    x = 124,687,565,315.48/398,747.99
  6. Step 6: Final answer
    x = 312,697.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.