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Finding the Fourth Proportional to 217,810.90, 305,246.30 and 217,810.90

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Solution

The fourth proportional to 217,810.90, 305,246.30 and 217,810.90 is: 305,246.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,810.90 : 305,246.30 = 217,810.90 : x
  2. Step 2: Convert to fraction form
    217,810.90/305,246.30 = 217,810.90/x
  3. Step 3: Cross multiply
    217,810.90x = 305,246.30 × 217,810.90
  4. Step 4: Simplify right side
    217,810.90x = 66,485,971,324.67
  5. Step 5: Solve for x
    x = 66,485,971,324.67/217,810.90
  6. Step 6: Final answer
    x = 305,246.30

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.