Home / 383,139.32-528,651.36-221,984.55

Finding the Fourth Proportional to 383,139.32, 528,651.36 and 221,984.55

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Solution

The fourth proportional to 383,139.32, 528,651.36 and 221,984.55 is: 306,291.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,139.32 : 528,651.36 = 221,984.55 : x
  2. Step 2: Convert to fraction form
    383,139.32/528,651.36 = 221,984.55/x
  3. Step 3: Cross multiply
    383,139.32x = 528,651.36 × 221,984.55
  4. Step 4: Simplify right side
    383,139.32x = 117,352,434,256.49
  5. Step 5: Solve for x
    x = 117,352,434,256.49/383,139.32
  6. Step 6: Final answer
    x = 306,291.81

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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.