Home / 383,123.09-528,709.82-222,071.55

Finding the Fourth Proportional to 383,123.09, 528,709.82 and 222,071.55

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Solution

The fourth proportional to 383,123.09, 528,709.82 and 222,071.55 is: 306,458.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,123.09 : 528,709.82 = 222,071.55 : x
  2. Step 2: Convert to fraction form
    383,123.09/528,709.82 = 222,071.55/x
  3. Step 3: Cross multiply
    383,123.09x = 528,709.82 × 222,071.55
  4. Step 4: Simplify right side
    383,123.09x = 117,411,409,782.80
  5. Step 5: Solve for x
    x = 117,411,409,782.80/383,123.09
  6. Step 6: Final answer
    x = 306,458.72

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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.