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Finding the Fourth Proportional to 217,030.67, 325,562.85 and 65,215.90

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Solution

The fourth proportional to 217,030.67, 325,562.85 and 65,215.90 is: 97,828.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,030.67 : 325,562.85 = 65,215.90 : x
  2. Step 2: Convert to fraction form
    217,030.67/325,562.85 = 65,215.90/x
  3. Step 3: Cross multiply
    217,030.67x = 325,562.85 × 65,215.90
  4. Step 4: Simplify right side
    217,030.67x = 21,231,874,676.27
  5. Step 5: Solve for x
    x = 21,231,874,676.27/217,030.67
  6. Step 6: Final answer
    x = 97,828.91

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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.