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Finding the Fourth Proportional to 217,615.88, 326,393.10 and 69,852.68

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Solution

The fourth proportional to 217,615.88, 326,393.10 and 69,852.68 is: 104,769.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,615.88 : 326,393.10 = 69,852.68 : x
  2. Step 2: Convert to fraction form
    217,615.88/326,393.10 = 69,852.68/x
  3. Step 3: Cross multiply
    217,615.88x = 326,393.10 × 69,852.68
  4. Step 4: Simplify right side
    217,615.88x = 22,799,432,768.51
  5. Step 5: Solve for x
    x = 22,799,432,768.51/217,615.88
  6. Step 6: Final answer
    x = 104,769.16

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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.