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Finding the Fourth Proportional to 383,141.69, 528,777.07 and 211,077.29

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Solution

The fourth proportional to 383,141.69, 528,777.07 and 211,077.29 is: 291,309.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,141.69 : 528,777.07 = 211,077.29 : x
  2. Step 2: Convert to fraction form
    383,141.69/528,777.07 = 211,077.29/x
  3. Step 3: Cross multiply
    383,141.69x = 528,777.07 × 211,077.29
  4. Step 4: Simplify right side
    383,141.69x = 111,612,827,778.16
  5. Step 5: Solve for x
    x = 111,612,827,778.16/383,141.69
  6. Step 6: Final answer
    x = 291,309.54

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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.