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Finding the Fourth Proportional to 216,628.96, 324,869.52 and 83,498.08

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Solution

The fourth proportional to 216,628.96, 324,869.52 and 83,498.08 is: 125,218.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,628.96 : 324,869.52 = 83,498.08 : x
  2. Step 2: Convert to fraction form
    216,628.96/324,869.52 = 83,498.08/x
  3. Step 3: Cross multiply
    216,628.96x = 324,869.52 × 83,498.08
  4. Step 4: Simplify right side
    216,628.96x = 27,125,981,170.52
  5. Step 5: Solve for x
    x = 27,125,981,170.52/216,628.96
  6. Step 6: Final answer
    x = 125,218.63

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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.