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Finding the Fourth Proportional to 208,252.39, 287,173.49 and 178,137.40

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Solution

The fourth proportional to 208,252.39, 287,173.49 and 178,137.40 is: 245,645.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,252.39 : 287,173.49 = 178,137.40 : x
  2. Step 2: Convert to fraction form
    208,252.39/287,173.49 = 178,137.40/x
  3. Step 3: Cross multiply
    208,252.39x = 287,173.49 × 178,137.40
  4. Step 4: Simplify right side
    208,252.39x = 51,156,338,584.94
  5. Step 5: Solve for x
    x = 51,156,338,584.94/208,252.39
  6. Step 6: Final answer
    x = 245,645.87

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1.5x scale

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.