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Finding the Fourth Proportional to 217,208.80, 325,870.80 and 76,952.80

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Solution

The fourth proportional to 217,208.80, 325,870.80 and 76,952.80 is: 115,449.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,208.80 : 325,870.80 = 76,952.80 : x
  2. Step 2: Convert to fraction form
    217,208.80/325,870.80 = 76,952.80/x
  3. Step 3: Cross multiply
    217,208.80x = 325,870.80 × 76,952.80
  4. Step 4: Simplify right side
    217,208.80x = 25,076,670,498.24
  5. Step 5: Solve for x
    x = 25,076,670,498.24/217,208.80
  6. Step 6: Final answer
    x = 115,449.61

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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.