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Finding the Fourth Proportional to 383,065.44, 528,625.34 and 210,980.13

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Solution

The fourth proportional to 383,065.44, 528,625.34 and 210,980.13 is: 291,149.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,065.44 : 528,625.34 = 210,980.13 : x
  2. Step 2: Convert to fraction form
    383,065.44/528,625.34 = 210,980.13/x
  3. Step 3: Cross multiply
    383,065.44x = 528,625.34 × 210,980.13
  4. Step 4: Simplify right side
    383,065.44x = 111,529,440,708.42
  5. Step 5: Solve for x
    x = 111,529,440,708.42/383,065.44
  6. Step 6: Final answer
    x = 291,149.84

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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.