Home / 213,867.40-320,109.90-166,865.80

Finding the Fourth Proportional to 213,867.40, 320,109.90 and 166,865.80

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Solution

The fourth proportional to 213,867.40, 320,109.90 and 166,865.80 is: 249,759.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,867.40 : 320,109.90 = 166,865.80 : x
  2. Step 2: Convert to fraction form
    213,867.40/320,109.90 = 166,865.80/x
  3. Step 3: Cross multiply
    213,867.40x = 320,109.90 × 166,865.80
  4. Step 4: Simplify right side
    213,867.40x = 53,415,394,551.42
  5. Step 5: Solve for x
    x = 53,415,394,551.42/213,867.40
  6. Step 6: Final answer
    x = 249,759.40

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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.