Home / 213,078.13-317,870.76-207,286.22

Finding the Fourth Proportional to 213,078.13, 317,870.76 and 207,286.22

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Solution

The fourth proportional to 213,078.13, 317,870.76 and 207,286.22 is: 309,230.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,078.13 : 317,870.76 = 207,286.22 : x
  2. Step 2: Convert to fraction form
    213,078.13/317,870.76 = 207,286.22/x
  3. Step 3: Cross multiply
    213,078.13x = 317,870.76 × 207,286.22
  4. Step 4: Simplify right side
    213,078.13x = 65,890,229,860.93
  5. Step 5: Solve for x
    x = 65,890,229,860.93/213,078.13
  6. Step 6: Final answer
    x = 309,230.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.