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Finding the Fourth Proportional to 383,112.72, 528,674.85 and 211,024.98

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Solution

The fourth proportional to 383,112.72, 528,674.85 and 211,024.98 is: 291,203.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,112.72 : 528,674.85 = 211,024.98 : x
  2. Step 2: Convert to fraction form
    383,112.72/528,674.85 = 211,024.98/x
  3. Step 3: Cross multiply
    383,112.72x = 528,674.85 × 211,024.98
  4. Step 4: Simplify right side
    383,112.72x = 111,563,599,647.75
  5. Step 5: Solve for x
    x = 111,563,599,647.75/383,112.72
  6. Step 6: Final answer
    x = 291,203.07

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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.