Home / 878,755.50-1,318,133.52-213,907.50

Finding the Fourth Proportional to 878,755.50, 1,318,133.52 and 213,907.50

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Solution

The fourth proportional to 878,755.50, 1,318,133.52 and 213,907.50 is: 320,861.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,755.50 : 1,318,133.52 = 213,907.50 : x
  2. Step 2: Convert to fraction form
    878,755.50/1,318,133.52 = 213,907.50/x
  3. Step 3: Cross multiply
    878,755.50x = 1,318,133.52 × 213,907.50
  4. Step 4: Simplify right side
    878,755.50x = 281,958,645,929.40
  5. Step 5: Solve for x
    x = 281,958,645,929.40/878,755.50
  6. Step 6: Final answer
    x = 320,861.32

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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.