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Finding the Fourth Proportional to 383,082.62, 528,649.74 and 210,997.31

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Solution

The fourth proportional to 383,082.62, 528,649.74 and 210,997.31 is: 291,173.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,082.62 : 528,649.74 = 210,997.31 : x
  2. Step 2: Convert to fraction form
    383,082.62/528,649.74 = 210,997.31/x
  3. Step 3: Cross multiply
    383,082.62x = 528,649.74 × 210,997.31
  4. Step 4: Simplify right side
    383,082.62x = 111,543,670,428.95
  5. Step 5: Solve for x
    x = 111,543,670,428.95/383,082.62
  6. Step 6: Final answer
    x = 291,173.93

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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.