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Finding the Fourth Proportional to 217,315.56, 325,784.88 and 84,104.12

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Solution

The fourth proportional to 217,315.56, 325,784.88 and 84,104.12 is: 126,083.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,315.56 : 325,784.88 = 84,104.12 : x
  2. Step 2: Convert to fraction form
    217,315.56/325,784.88 = 84,104.12/x
  3. Step 3: Cross multiply
    217,315.56x = 325,784.88 × 84,104.12
  4. Step 4: Simplify right side
    217,315.56x = 27,399,850,641.71
  5. Step 5: Solve for x
    x = 27,399,850,641.71/217,315.56
  6. Step 6: Final answer
    x = 126,083.24

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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.