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Finding the Fourth Proportional to 208,310.94, 312,441.71 and 54,426.74

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Solution

The fourth proportional to 208,310.94, 312,441.71 and 54,426.74 is: 81,633.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,310.94 : 312,441.71 = 54,426.74 : x
  2. Step 2: Convert to fraction form
    208,310.94/312,441.71 = 54,426.74/x
  3. Step 3: Cross multiply
    208,310.94x = 312,441.71 × 54,426.74
  4. Step 4: Simplify right side
    208,310.94x = 17,005,181,880.98
  5. Step 5: Solve for x
    x = 17,005,181,880.98/208,310.94
  6. Step 6: Final answer
    x = 81,633.65

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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.