Home / 383,131.64-528,683.82-213,381.56

Finding the Fourth Proportional to 383,131.64, 528,683.82 and 213,381.56

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Solution

The fourth proportional to 383,131.64, 528,683.82 and 213,381.56 is: 294,445.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,131.64 : 528,683.82 = 213,381.56 : x
  2. Step 2: Convert to fraction form
    383,131.64/528,683.82 = 213,381.56/x
  3. Step 3: Cross multiply
    383,131.64x = 528,683.82 × 213,381.56
  4. Step 4: Simplify right side
    383,131.64x = 112,811,378,258.36
  5. Step 5: Solve for x
    x = 112,811,378,258.36/383,131.64
  6. Step 6: Final answer
    x = 294,445.48

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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.