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Finding the Fourth Proportional to 213,615.56, 320,441.56 and 55,843.76

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Solution

The fourth proportional to 213,615.56, 320,441.56 and 55,843.76 is: 83,770.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,615.56 : 320,441.56 = 55,843.76 : x
  2. Step 2: Convert to fraction form
    213,615.56/320,441.56 = 55,843.76/x
  3. Step 3: Cross multiply
    213,615.56x = 320,441.56 × 55,843.76
  4. Step 4: Simplify right side
    213,615.56x = 17,894,661,570.67
  5. Step 5: Solve for x
    x = 17,894,661,570.67/213,615.56
  6. Step 6: Final answer
    x = 83,770.40

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1.5x scale

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.