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Finding the Fourth Proportional to 324,206.80, 485,143.80 and 219,230.80

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Solution

The fourth proportional to 324,206.80, 485,143.80 and 219,230.80 is: 328,057.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,206.80 : 485,143.80 = 219,230.80 : x
  2. Step 2: Convert to fraction form
    324,206.80/485,143.80 = 219,230.80/x
  3. Step 3: Cross multiply
    324,206.80x = 485,143.80 × 219,230.80
  4. Step 4: Simplify right side
    324,206.80x = 106,358,463,389.04
  5. Step 5: Solve for x
    x = 106,358,463,389.04/324,206.80
  6. Step 6: Final answer
    x = 328,057.47

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1.5x scale

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.