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Finding the Fourth Proportional to 383,915.10, 576,131.85 and 225,975.90

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Solution

The fourth proportional to 383,915.10, 576,131.85 and 225,975.90 is: 339,116.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,915.10 : 576,131.85 = 225,975.90 : x
  2. Step 2: Convert to fraction form
    383,915.10/576,131.85 = 225,975.90/x
  3. Step 3: Cross multiply
    383,915.10x = 576,131.85 × 225,975.90
  4. Step 4: Simplify right side
    383,915.10x = 130,191,913,322.42
  5. Step 5: Solve for x
    x = 130,191,913,322.42/383,915.10
  6. Step 6: Final answer
    x = 339,116.42

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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.