Home / 205,723.20-309,045.60-197,326.40

Finding the Fourth Proportional to 205,723.20, 309,045.60 and 197,326.40

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Solution

The fourth proportional to 205,723.20, 309,045.60 and 197,326.40 is: 296,431.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,723.20 : 309,045.60 = 197,326.40 : x
  2. Step 2: Convert to fraction form
    205,723.20/309,045.60 = 197,326.40/x
  3. Step 3: Cross multiply
    205,723.20x = 309,045.60 × 197,326.40
  4. Step 4: Simplify right side
    205,723.20x = 60,982,855,683.84
  5. Step 5: Solve for x
    x = 60,982,855,683.84/205,723.20
  6. Step 6: Final answer
    x = 296,431.59

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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.