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Finding the Fourth Proportional to 322,754.40, 483,613.20 and 211,816.80

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Solution

The fourth proportional to 322,754.40, 483,613.20 and 211,816.80 is: 317,384.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,754.40 : 483,613.20 = 211,816.80 : x
  2. Step 2: Convert to fraction form
    322,754.40/483,613.20 = 211,816.80/x
  3. Step 3: Cross multiply
    322,754.40x = 483,613.20 × 211,816.80
  4. Step 4: Simplify right side
    322,754.40x = 102,437,400,461.76
  5. Step 5: Solve for x
    x = 102,437,400,461.76/322,754.40
  6. Step 6: Final answer
    x = 317,384.99

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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.