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Finding the Fourth Proportional to 208,660.91, 312,987.87 and 66,504.24

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Solution

The fourth proportional to 208,660.91, 312,987.87 and 66,504.24 is: 99,755.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,660.91 : 312,987.87 = 66,504.24 : x
  2. Step 2: Convert to fraction form
    208,660.91/312,987.87 = 66,504.24/x
  3. Step 3: Cross multiply
    208,660.91x = 312,987.87 × 66,504.24
  4. Step 4: Simplify right side
    208,660.91x = 20,815,020,610.61
  5. Step 5: Solve for x
    x = 20,815,020,610.61/208,660.91
  6. Step 6: Final answer
    x = 99,755.25

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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.