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Finding the Fourth Proportional to 358,908.57, 495,289.82 and 203,858.78

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Solution

The fourth proportional to 358,908.57, 495,289.82 and 203,858.78 is: 281,322.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,908.57 : 495,289.82 = 203,858.78 : x
  2. Step 2: Convert to fraction form
    358,908.57/495,289.82 = 203,858.78/x
  3. Step 3: Cross multiply
    358,908.57x = 495,289.82 × 203,858.78
  4. Step 4: Simplify right side
    358,908.57x = 100,969,176,484.82
  5. Step 5: Solve for x
    x = 100,969,176,484.82/358,908.57
  6. Step 6: Final answer
    x = 281,322.84

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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.