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Finding the Fourth Proportional to 218,069.65, 326,970.52 and 84,794.56

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Solution

The fourth proportional to 218,069.65, 326,970.52 and 84,794.56 is: 127,139.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,069.65 : 326,970.52 = 84,794.56 : x
  2. Step 2: Convert to fraction form
    218,069.65/326,970.52 = 84,794.56/x
  3. Step 3: Cross multiply
    218,069.65x = 326,970.52 × 84,794.56
  4. Step 4: Simplify right side
    218,069.65x = 27,725,321,437.00
  5. Step 5: Solve for x
    x = 27,725,321,437.00/218,069.65
  6. Step 6: Final answer
    x = 127,139.75

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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.