Home / 213,464.40-320,160.16-71,290

Finding the Fourth Proportional to 213,464.40, 320,160.16 and 71,290

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Solution

The fourth proportional to 213,464.40, 320,160.16 and 71,290 is: 106,922.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,464.40 : 320,160.16 = 71,290 : x
  2. Step 2: Convert to fraction form
    213,464.40/320,160.16 = 71,290/x
  3. Step 3: Cross multiply
    213,464.40x = 320,160.16 × 71,290
  4. Step 4: Simplify right side
    213,464.40x = 22,824,217,806.40
  5. Step 5: Solve for x
    x = 22,824,217,806.40/213,464.40
  6. Step 6: Final answer
    x = 106,922.83

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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.