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Finding the Fourth Proportional to 519,153.05, 716,584.43 and 304,339.61

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Solution

The fourth proportional to 519,153.05, 716,584.43 and 304,339.61 is: 420,078.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,153.05 : 716,584.43 = 304,339.61 : x
  2. Step 2: Convert to fraction form
    519,153.05/716,584.43 = 304,339.61/x
  3. Step 3: Cross multiply
    519,153.05x = 716,584.43 × 304,339.61
  4. Step 4: Simplify right side
    519,153.05x = 218,085,025,958.27
  5. Step 5: Solve for x
    x = 218,085,025,958.27/519,153.05
  6. Step 6: Final answer
    x = 420,078.48

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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.