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Finding the Fourth Proportional to 355,892.69, 491,136.47 and 204,989.69

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Solution

The fourth proportional to 355,892.69, 491,136.47 and 204,989.69 is: 282,888.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,892.69 : 491,136.47 = 204,989.69 : x
  2. Step 2: Convert to fraction form
    355,892.69/491,136.47 = 204,989.69/x
  3. Step 3: Cross multiply
    355,892.69x = 491,136.47 × 204,989.69
  4. Step 4: Simplify right side
    355,892.69x = 100,677,912,732.99
  5. Step 5: Solve for x
    x = 100,677,912,732.99/355,892.69
  6. Step 6: Final answer
    x = 282,888.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.