Home / 383,128.64-528,679.68-213,378.56

Finding the Fourth Proportional to 383,128.64, 528,679.68 and 213,378.56

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Solution

The fourth proportional to 383,128.64, 528,679.68 and 213,378.56 is: 294,441.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,128.64 : 528,679.68 = 213,378.56 : x
  2. Step 2: Convert to fraction form
    383,128.64/528,679.68 = 213,378.56/x
  3. Step 3: Cross multiply
    383,128.64x = 528,679.68 × 213,378.56
  4. Step 4: Simplify right side
    383,128.64x = 112,808,908,819.66
  5. Step 5: Solve for x
    x = 112,808,908,819.66/383,128.64
  6. Step 6: Final answer
    x = 294,441.34

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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.