Home / 382,986.97-528,441.90-221,832.40

Finding the Fourth Proportional to 382,986.97, 528,441.90 and 221,832.40

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Solution

The fourth proportional to 382,986.97, 528,441.90 and 221,832.40 is: 306,082.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,986.97 : 528,441.90 = 221,832.40 : x
  2. Step 2: Convert to fraction form
    382,986.97/528,441.90 = 221,832.40/x
  3. Step 3: Cross multiply
    382,986.97x = 528,441.90 × 221,832.40
  4. Step 4: Simplify right side
    382,986.97x = 117,225,534,937.56
  5. Step 5: Solve for x
    x = 117,225,534,937.56/382,986.97
  6. Step 6: Final answer
    x = 306,082.31

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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.