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Finding the Fourth Proportional to 217,171.37, 325,755.95 and 55,065.45

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Solution

The fourth proportional to 217,171.37, 325,755.95 and 55,065.45 is: 82,597.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,171.37 : 325,755.95 = 55,065.45 : x
  2. Step 2: Convert to fraction form
    217,171.37/325,755.95 = 55,065.45/x
  3. Step 3: Cross multiply
    217,171.37x = 325,755.95 × 55,065.45
  4. Step 4: Simplify right side
    217,171.37x = 17,937,897,701.60
  5. Step 5: Solve for x
    x = 17,937,897,701.60/217,171.37
  6. Step 6: Final answer
    x = 82,597.90

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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.