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Finding the Fourth Proportional to 661,719,136.20, 992,616,029.10 and 201,672,313.80

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Solution

The fourth proportional to 661,719,136.20, 992,616,029.10 and 201,672,313.80 is: 302,519,846.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,719,136.20 : 992,616,029.10 = 201,672,313.80 : x
  2. Step 2: Convert to fraction form
    661,719,136.20/992,616,029.10 = 201,672,313.80/x
  3. Step 3: Cross multiply
    661,719,136.20x = 992,616,029.10 × 201,672,313.80
  4. Step 4: Simplify right side
    661,719,136.20x = 200,183,171,303,565,152
  5. Step 5: Solve for x
    x = 200,183,171,303,565,152/661,719,136.20
  6. Step 6: Final answer
    x = 302,519,846.19

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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.