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Finding the Fourth Proportional to 383,979, 529,889.50 and 214,212.92

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Solution

The fourth proportional to 383,979, 529,889.50 and 214,212.92 is: 295,612.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,979 : 529,889.50 = 214,212.92 : x
  2. Step 2: Convert to fraction form
    383,979/529,889.50 = 214,212.92/x
  3. Step 3: Cross multiply
    383,979x = 529,889.50 × 214,212.92
  4. Step 4: Simplify right side
    383,979x = 113,509,177,072.34
  5. Step 5: Solve for x
    x = 113,509,177,072.34/383,979
  6. Step 6: Final answer
    x = 295,612.98

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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.