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Finding the Fourth Proportional to 170,788.40, 256,086.60 and 65,610.80

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Solution

The fourth proportional to 170,788.40, 256,086.60 and 65,610.80 is: 98,379.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,788.40 : 256,086.60 = 65,610.80 : x
  2. Step 2: Convert to fraction form
    170,788.40/256,086.60 = 65,610.80/x
  3. Step 3: Cross multiply
    170,788.40x = 256,086.60 × 65,610.80
  4. Step 4: Simplify right side
    170,788.40x = 16,802,046,695.28
  5. Step 5: Solve for x
    x = 16,802,046,695.28/170,788.40
  6. Step 6: Final answer
    x = 98,379.32

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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.