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Finding the Fourth Proportional to 217,040.40, 325,123.20 and 146,181.60

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Solution

The fourth proportional to 217,040.40, 325,123.20 and 146,181.60 is: 218,977.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,040.40 : 325,123.20 = 146,181.60 : x
  2. Step 2: Convert to fraction form
    217,040.40/325,123.20 = 146,181.60/x
  3. Step 3: Cross multiply
    217,040.40x = 325,123.20 × 146,181.60
  4. Step 4: Simplify right side
    217,040.40x = 47,527,029,573.12
  5. Step 5: Solve for x
    x = 47,527,029,573.12/217,040.40
  6. Step 6: Final answer
    x = 218,977.80

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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.