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Finding the Fourth Proportional to 357,986.28, 536,951.28 and 208,131

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Solution

The fourth proportional to 357,986.28, 536,951.28 and 208,131 is: 312,180.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,986.28 : 536,951.28 = 208,131 : x
  2. Step 2: Convert to fraction form
    357,986.28/536,951.28 = 208,131/x
  3. Step 3: Cross multiply
    357,986.28x = 536,951.28 × 208,131
  4. Step 4: Simplify right side
    357,986.28x = 111,756,206,857.68
  5. Step 5: Solve for x
    x = 111,756,206,857.68/357,986.28
  6. Step 6: Final answer
    x = 312,180.14

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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.