Home / 209,986.30-314,979.45-198,613.90

Finding the Fourth Proportional to 209,986.30, 314,979.45 and 198,613.90

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Solution

The fourth proportional to 209,986.30, 314,979.45 and 198,613.90 is: 297,920.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,986.30 : 314,979.45 = 198,613.90 : x
  2. Step 2: Convert to fraction form
    209,986.30/314,979.45 = 198,613.90/x
  3. Step 3: Cross multiply
    209,986.30x = 314,979.45 × 198,613.90
  4. Step 4: Simplify right side
    209,986.30x = 62,559,296,984.36
  5. Step 5: Solve for x
    x = 62,559,296,984.36/209,986.30
  6. Step 6: Final answer
    x = 297,920.85

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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.