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Finding the Fourth Proportional to 404,143.26, 606,214.79 and 137,903.76

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Solution

The fourth proportional to 404,143.26, 606,214.79 and 137,903.76 is: 206,855.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,143.26 : 606,214.79 = 137,903.76 : x
  2. Step 2: Convert to fraction form
    404,143.26/606,214.79 = 137,903.76/x
  3. Step 3: Cross multiply
    404,143.26x = 606,214.79 × 137,903.76
  4. Step 4: Simplify right side
    404,143.26x = 83,599,296,222.30
  5. Step 5: Solve for x
    x = 83,599,296,222.30/404,143.26
  6. Step 6: Final answer
    x = 206,855.60

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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.