Home / 386,351.70-579,815.55-199,266.90

Finding the Fourth Proportional to 386,351.70, 579,815.55 and 199,266.90

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Solution

The fourth proportional to 386,351.70, 579,815.55 and 199,266.90 is: 299,048.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,351.70 : 579,815.55 = 199,266.90 : x
  2. Step 2: Convert to fraction form
    386,351.70/579,815.55 = 199,266.90/x
  3. Step 3: Cross multiply
    386,351.70x = 579,815.55 × 199,266.90
  4. Step 4: Simplify right side
    386,351.70x = 115,538,047,220.30
  5. Step 5: Solve for x
    x = 115,538,047,220.30/386,351.70
  6. Step 6: Final answer
    x = 299,048.89

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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.