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Finding the Fourth Proportional to 217,745, 326,617.50 and 70,001

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Solution

The fourth proportional to 217,745, 326,617.50 and 70,001 is: 105,001.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,745 : 326,617.50 = 70,001 : x
  2. Step 2: Convert to fraction form
    217,745/326,617.50 = 70,001/x
  3. Step 3: Cross multiply
    217,745x = 326,617.50 × 70,001
  4. Step 4: Simplify right side
    217,745x = 22,863,551,617.50
  5. Step 5: Solve for x
    x = 22,863,551,617.50/217,745
  6. Step 6: Final answer
    x = 105,001.50

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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.