Home / 851,325.20-1,276,950.88-211,615.40

Finding the Fourth Proportional to 851,325.20, 1,276,950.88 and 211,615.40

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Solution

The fourth proportional to 851,325.20, 1,276,950.88 and 211,615.40 is: 317,413.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,325.20 : 1,276,950.88 = 211,615.40 : x
  2. Step 2: Convert to fraction form
    851,325.20/1,276,950.88 = 211,615.40/x
  3. Step 3: Cross multiply
    851,325.20x = 1,276,950.88 × 211,615.40
  4. Step 4: Simplify right side
    851,325.20x = 270,222,471,251.55
  5. Step 5: Solve for x
    x = 270,222,471,251.55/851,325.20
  6. Step 6: Final answer
    x = 317,413.92

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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.