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Finding the Fourth Proportional to 216,563.25, 324,720.19 and 83,426.19

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Solution

The fourth proportional to 216,563.25, 324,720.19 and 83,426.19 is: 125,091.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,563.25 : 324,720.19 = 83,426.19 : x
  2. Step 2: Convert to fraction form
    216,563.25/324,720.19 = 83,426.19/x
  3. Step 3: Cross multiply
    216,563.25x = 324,720.19 × 83,426.19
  4. Step 4: Simplify right side
    216,563.25x = 27,090,167,154.36
  5. Step 5: Solve for x
    x = 27,090,167,154.36/216,563.25
  6. Step 6: Final answer
    x = 125,091.25

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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.