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Finding the Fourth Proportional to 355,428.69, 490,491.62 and 194,284.38

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Solution

The fourth proportional to 355,428.69, 490,491.62 and 194,284.38 is: 268,112.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,428.69 : 490,491.62 = 194,284.38 : x
  2. Step 2: Convert to fraction form
    355,428.69/490,491.62 = 194,284.38/x
  3. Step 3: Cross multiply
    355,428.69x = 490,491.62 × 194,284.38
  4. Step 4: Simplify right side
    355,428.69x = 95,294,859,315.47
  5. Step 5: Solve for x
    x = 95,294,859,315.47/355,428.69
  6. Step 6: Final answer
    x = 268,112.46

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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.