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Finding the Fourth Proportional to 217,765,009.80, 326,647,514.70 and 201,136,811.40

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Solution

The fourth proportional to 217,765,009.80, 326,647,514.70 and 201,136,811.40 is: 301,705,217.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,765,009.80 : 326,647,514.70 = 201,136,811.40 : x
  2. Step 2: Convert to fraction form
    217,765,009.80/326,647,514.70 = 201,136,811.40/x
  3. Step 3: Cross multiply
    217,765,009.80x = 326,647,514.70 × 201,136,811.40
  4. Step 4: Simplify right side
    217,765,009.80x = 65,700,839,558,492,624
  5. Step 5: Solve for x
    x = 65,700,839,558,492,624/217,765,009.80
  6. Step 6: Final answer
    x = 301,705,217.10

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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.