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Finding the Fourth Proportional to 217,970.60, 326,968.86 and 84,806.60

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Solution

The fourth proportional to 217,970.60, 326,968.86 and 84,806.60 is: 127,214.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,970.60 : 326,968.86 = 84,806.60 : x
  2. Step 2: Convert to fraction form
    217,970.60/326,968.86 = 84,806.60/x
  3. Step 3: Cross multiply
    217,970.60x = 326,968.86 × 84,806.60
  4. Step 4: Simplify right side
    217,970.60x = 27,729,117,322.48
  5. Step 5: Solve for x
    x = 27,729,117,322.48/217,970.60
  6. Step 6: Final answer
    x = 127,214.94

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1.5x scale

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.