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Finding the Fourth Proportional to 216,998.54, 325,340.08 and 90,674.96

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Solution

The fourth proportional to 216,998.54, 325,340.08 and 90,674.96 is: 135,946.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,998.54 : 325,340.08 = 90,674.96 : x
  2. Step 2: Convert to fraction form
    216,998.54/325,340.08 = 90,674.96/x
  3. Step 3: Cross multiply
    216,998.54x = 325,340.08 × 90,674.96
  4. Step 4: Simplify right side
    216,998.54x = 29,500,198,740.40
  5. Step 5: Solve for x
    x = 29,500,198,740.40/216,998.54
  6. Step 6: Final answer
    x = 135,946.53

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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.