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Finding the Fourth Proportional to 205,500.70, 287,078.90 and 205,500.70

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Solution

The fourth proportional to 205,500.70, 287,078.90 and 205,500.70 is: 287,078.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,500.70 : 287,078.90 = 205,500.70 : x
  2. Step 2: Convert to fraction form
    205,500.70/287,078.90 = 205,500.70/x
  3. Step 3: Cross multiply
    205,500.70x = 287,078.90 × 205,500.70
  4. Step 4: Simplify right side
    205,500.70x = 58,994,914,905.23
  5. Step 5: Solve for x
    x = 58,994,914,905.23/205,500.70
  6. Step 6: Final answer
    x = 287,078.90

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.