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Finding the Fourth Proportional to 358,992.76, 495,387.74 and 197,838.80

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Solution

The fourth proportional to 358,992.76, 495,387.74 and 197,838.80 is: 273,005.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,992.76 : 495,387.74 = 197,838.80 : x
  2. Step 2: Convert to fraction form
    358,992.76/495,387.74 = 197,838.80/x
  3. Step 3: Cross multiply
    358,992.76x = 495,387.74 × 197,838.80
  4. Step 4: Simplify right side
    358,992.76x = 98,006,916,016.31
  5. Step 5: Solve for x
    x = 98,006,916,016.31/358,992.76
  6. Step 6: Final answer
    x = 273,005.27

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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.