Home / 383,157.31-528,757.09-213,391.43

Finding the Fourth Proportional to 383,157.31, 528,757.09 and 213,391.43

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Solution

The fourth proportional to 383,157.31, 528,757.09 and 213,391.43 is: 294,480.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,157.31 : 528,757.09 = 213,391.43 : x
  2. Step 2: Convert to fraction form
    383,157.31/528,757.09 = 213,391.43/x
  3. Step 3: Cross multiply
    383,157.31x = 528,757.09 × 213,391.43
  4. Step 4: Simplify right side
    383,157.31x = 112,832,232,346.15
  5. Step 5: Solve for x
    x = 112,832,232,346.15/383,157.31
  6. Step 6: Final answer
    x = 294,480.18

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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.