Home / 382,914.81-528,384.33-221,821.74

Finding the Fourth Proportional to 382,914.81, 528,384.33 and 221,821.74

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Solution

The fourth proportional to 382,914.81, 528,384.33 and 221,821.74 is: 306,091.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,914.81 : 528,384.33 = 221,821.74 : x
  2. Step 2: Convert to fraction form
    382,914.81/528,384.33 = 221,821.74/x
  3. Step 3: Cross multiply
    382,914.81x = 528,384.33 × 221,821.74
  4. Step 4: Simplify right side
    382,914.81x = 117,207,131,469.33
  5. Step 5: Solve for x
    x = 117,207,131,469.33/382,914.81
  6. Step 6: Final answer
    x = 306,091.93

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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.