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Finding the Fourth Proportional to 358,687.40, 495,042.43 and 272,504.57

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Solution

The fourth proportional to 358,687.40, 495,042.43 and 272,504.57 is: 376,097.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,687.40 : 495,042.43 = 272,504.57 : x
  2. Step 2: Convert to fraction form
    358,687.40/495,042.43 = 272,504.57/x
  3. Step 3: Cross multiply
    358,687.40x = 495,042.43 × 272,504.57
  4. Step 4: Simplify right side
    358,687.40x = 134,901,322,043.69
  5. Step 5: Solve for x
    x = 134,901,322,043.69/358,687.40
  6. Step 6: Final answer
    x = 376,097.19

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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.