Home / 383,915.10-576,131.85-215,435.10

Finding the Fourth Proportional to 383,915.10, 576,131.85 and 215,435.10

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Solution

The fourth proportional to 383,915.10, 576,131.85 and 215,435.10 is: 323,298.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,915.10 : 576,131.85 = 215,435.10 : x
  2. Step 2: Convert to fraction form
    383,915.10/576,131.85 = 215,435.10/x
  3. Step 3: Cross multiply
    383,915.10x = 576,131.85 × 215,435.10
  4. Step 4: Simplify right side
    383,915.10x = 124,119,022,717.94
  5. Step 5: Solve for x
    x = 124,119,022,717.94/383,915.10
  6. Step 6: Final answer
    x = 323,298.10

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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.