Home / 382,758.10-528,171.86-221,624.06

Finding the Fourth Proportional to 382,758.10, 528,171.86 and 221,624.06

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Solution

The fourth proportional to 382,758.10, 528,171.86 and 221,624.06 is: 305,821.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,758.10 : 528,171.86 = 221,624.06 : x
  2. Step 2: Convert to fraction form
    382,758.10/528,171.86 = 221,624.06/x
  3. Step 3: Cross multiply
    382,758.10x = 528,171.86 × 221,624.06
  4. Step 4: Simplify right side
    382,758.10x = 117,055,589,904.15
  5. Step 5: Solve for x
    x = 117,055,589,904.15/382,758.10
  6. Step 6: Final answer
    x = 305,821.33

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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.