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Finding the Fourth Proportional to 386,105.63, 579,375.93 and 301,628.81

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Solution

The fourth proportional to 386,105.63, 579,375.93 and 301,628.81 is: 452,613.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,105.63 : 579,375.93 = 301,628.81 : x
  2. Step 2: Convert to fraction form
    386,105.63/579,375.93 = 301,628.81/x
  3. Step 3: Cross multiply
    386,105.63x = 579,375.93 × 301,628.81
  4. Step 4: Simplify right side
    386,105.63x = 174,756,469,411.66
  5. Step 5: Solve for x
    x = 174,756,469,411.66/386,105.63
  6. Step 6: Final answer
    x = 452,613.11

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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.