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Finding the Fourth Proportional to 362,706.30, 543,670.65 and 137,979.90

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Solution

The fourth proportional to 362,706.30, 543,670.65 and 137,979.90 is: 206,821.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,706.30 : 543,670.65 = 137,979.90 : x
  2. Step 2: Convert to fraction form
    362,706.30/543,670.65 = 137,979.90/x
  3. Step 3: Cross multiply
    362,706.30x = 543,670.65 × 137,979.90
  4. Step 4: Simplify right side
    362,706.30x = 75,015,621,919.94
  5. Step 5: Solve for x
    x = 75,015,621,919.94/362,706.30
  6. Step 6: Final answer
    x = 206,821.94

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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.