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Finding the Fourth Proportional to 218,073.66, 326,976.51 and 84,798.54

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Solution

The fourth proportional to 218,073.66, 326,976.51 and 84,798.54 is: 127,145.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,073.66 : 326,976.51 = 84,798.54 : x
  2. Step 2: Convert to fraction form
    218,073.66/326,976.51 = 84,798.54/x
  3. Step 3: Cross multiply
    218,073.66x = 326,976.51 × 84,798.54
  4. Step 4: Simplify right side
    218,073.66x = 27,727,130,662.30
  5. Step 5: Solve for x
    x = 27,727,130,662.30/218,073.66
  6. Step 6: Final answer
    x = 127,145.71

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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.