Home / 383,005.16-528,640.22-221,834.19

Finding the Fourth Proportional to 383,005.16, 528,640.22 and 221,834.19

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Solution

The fourth proportional to 383,005.16, 528,640.22 and 221,834.19 is: 306,185.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,005.16 : 528,640.22 = 221,834.19 : x
  2. Step 2: Convert to fraction form
    383,005.16/528,640.22 = 221,834.19/x
  3. Step 3: Cross multiply
    383,005.16x = 528,640.22 × 221,834.19
  4. Step 4: Simplify right side
    383,005.16x = 117,270,473,895.95
  5. Step 5: Solve for x
    x = 117,270,473,895.95/383,005.16
  6. Step 6: Final answer
    x = 306,185.11

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1.5x scale

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.