Home / 259,845.90-390,060.45-200,942.70

Finding the Fourth Proportional to 259,845.90, 390,060.45 and 200,942.70

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Solution

The fourth proportional to 259,845.90, 390,060.45 and 200,942.70 is: 301,639.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,845.90 : 390,060.45 = 200,942.70 : x
  2. Step 2: Convert to fraction form
    259,845.90/390,060.45 = 200,942.70/x
  3. Step 3: Cross multiply
    259,845.90x = 390,060.45 × 200,942.70
  4. Step 4: Simplify right side
    259,845.90x = 78,379,799,986.22
  5. Step 5: Solve for x
    x = 78,379,799,986.22/259,845.90
  6. Step 6: Final answer
    x = 301,639.55

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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.