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Finding the Fourth Proportional to 341,951.80, 512,879.10 and 105,318.40

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Solution

The fourth proportional to 341,951.80, 512,879.10 and 105,318.40 is: 157,962.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,951.80 : 512,879.10 = 105,318.40 : x
  2. Step 2: Convert to fraction form
    341,951.80/512,879.10 = 105,318.40/x
  3. Step 3: Cross multiply
    341,951.80x = 512,879.10 × 105,318.40
  4. Step 4: Simplify right side
    341,951.80x = 54,015,606,205.44
  5. Step 5: Solve for x
    x = 54,015,606,205.44/341,951.80
  6. Step 6: Final answer
    x = 157,962.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.