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Finding the Fourth Proportional to 383,258.51, 528,779.66 and 222,082.41

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Solution

The fourth proportional to 383,258.51, 528,779.66 and 222,082.41 is: 306,405.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,258.51 : 528,779.66 = 222,082.41 : x
  2. Step 2: Convert to fraction form
    383,258.51/528,779.66 = 222,082.41/x
  3. Step 3: Cross multiply
    383,258.51x = 528,779.66 × 222,082.41
  4. Step 4: Simplify right side
    383,258.51x = 117,432,660,141.37
  5. Step 5: Solve for x
    x = 117,432,660,141.37/383,258.51
  6. Step 6: Final answer
    x = 306,405.88

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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.