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Finding the Fourth Proportional to 303,067.08, 418,411.76 and 269,440

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Solution

The fourth proportional to 303,067.08, 418,411.76 and 269,440 is: 371,986.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,067.08 : 418,411.76 = 269,440 : x
  2. Step 2: Convert to fraction form
    303,067.08/418,411.76 = 269,440/x
  3. Step 3: Cross multiply
    303,067.08x = 418,411.76 × 269,440
  4. Step 4: Simplify right side
    303,067.08x = 112,736,864,614.40
  5. Step 5: Solve for x
    x = 112,736,864,614.40/303,067.08
  6. Step 6: Final answer
    x = 371,986.51

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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.