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Finding the Fourth Proportional to 217,606.80, 326,405.88 and 143,196.96

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Solution

The fourth proportional to 217,606.80, 326,405.88 and 143,196.96 is: 214,792.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,606.80 : 326,405.88 = 143,196.96 : x
  2. Step 2: Convert to fraction form
    217,606.80/326,405.88 = 143,196.96/x
  3. Step 3: Cross multiply
    217,606.80x = 326,405.88 × 143,196.96
  4. Step 4: Simplify right side
    217,606.80x = 46,740,329,742.12
  5. Step 5: Solve for x
    x = 46,740,329,742.12/217,606.80
  6. Step 6: Final answer
    x = 214,792.60

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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.