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Finding the Fourth Proportional to 207,321.92, 286,143.40 and 129,833.57

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Solution

The fourth proportional to 207,321.92, 286,143.40 and 129,833.57 is: 179,194.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,321.92 : 286,143.40 = 129,833.57 : x
  2. Step 2: Convert to fraction form
    207,321.92/286,143.40 = 129,833.57/x
  3. Step 3: Cross multiply
    207,321.92x = 286,143.40 × 129,833.57
  4. Step 4: Simplify right side
    207,321.92x = 37,151,019,153.94
  5. Step 5: Solve for x
    x = 37,151,019,153.94/207,321.92
  6. Step 6: Final answer
    x = 179,194.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.