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Finding the Fourth Proportional to 358,725.66, 495,231.39 and 277,971.90

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Solution

The fourth proportional to 358,725.66, 495,231.39 and 277,971.90 is: 383,748.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,725.66 : 495,231.39 = 277,971.90 : x
  2. Step 2: Convert to fraction form
    358,725.66/495,231.39 = 277,971.90/x
  3. Step 3: Cross multiply
    358,725.66x = 495,231.39 × 277,971.90
  4. Step 4: Simplify right side
    358,725.66x = 137,660,410,417.94
  5. Step 5: Solve for x
    x = 137,660,410,417.94/358,725.66
  6. Step 6: Final answer
    x = 383,748.43

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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.