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Finding the Fourth Proportional to 253,591.08, 380,357.28 and 66,617.16

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Solution

The fourth proportional to 253,591.08, 380,357.28 and 66,617.16 is: 99,918.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,591.08 : 380,357.28 = 66,617.16 : x
  2. Step 2: Convert to fraction form
    253,591.08/380,357.28 = 66,617.16/x
  3. Step 3: Cross multiply
    253,591.08x = 380,357.28 × 66,617.16
  4. Step 4: Simplify right side
    253,591.08x = 25,338,321,778.92
  5. Step 5: Solve for x
    x = 25,338,321,778.92/253,591.08
  6. Step 6: Final answer
    x = 99,918.03

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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.