Home / 382,638.30-574,018.20-129,942.60

Finding the Fourth Proportional to 382,638.30, 574,018.20 and 129,942.60

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Solution

The fourth proportional to 382,638.30, 574,018.20 and 129,942.60 is: 194,934.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,638.30 : 574,018.20 = 129,942.60 : x
  2. Step 2: Convert to fraction form
    382,638.30/574,018.20 = 129,942.60/x
  3. Step 3: Cross multiply
    382,638.30x = 574,018.20 × 129,942.60
  4. Step 4: Simplify right side
    382,638.30x = 74,589,417,355.32
  5. Step 5: Solve for x
    x = 74,589,417,355.32/382,638.30
  6. Step 6: Final answer
    x = 194,934.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.