Home / 878,189.75-1,317,287.87-213,341.75

Finding the Fourth Proportional to 878,189.75, 1,317,287.87 and 213,341.75

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Solution

The fourth proportional to 878,189.75, 1,317,287.87 and 213,341.75 is: 320,013.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,189.75 : 1,317,287.87 = 213,341.75 : x
  2. Step 2: Convert to fraction form
    878,189.75/1,317,287.87 = 213,341.75/x
  3. Step 3: Cross multiply
    878,189.75x = 1,317,287.87 × 213,341.75
  4. Step 4: Simplify right side
    878,189.75x = 281,032,499,439.57
  5. Step 5: Solve for x
    x = 281,032,499,439.57/878,189.75
  6. Step 6: Final answer
    x = 320,013.41

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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.