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Finding the Fourth Proportional to 383,995.69, 529,910.30 and 211,915.24

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Solution

The fourth proportional to 383,995.69, 529,910.30 and 211,915.24 is: 292,440.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,995.69 : 529,910.30 = 211,915.24 : x
  2. Step 2: Convert to fraction form
    383,995.69/529,910.30 = 211,915.24/x
  3. Step 3: Cross multiply
    383,995.69x = 529,910.30 × 211,915.24
  4. Step 4: Simplify right side
    383,995.69x = 112,296,067,607.98
  5. Step 5: Solve for x
    x = 112,296,067,607.98/383,995.69
  6. Step 6: Final answer
    x = 292,440.96

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1.5x scale

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.