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Finding the Fourth Proportional to 230,635.92, 318,292.26 and 128,676.76

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Solution

The fourth proportional to 230,635.92, 318,292.26 and 128,676.76 is: 177,582.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,635.92 : 318,292.26 = 128,676.76 : x
  2. Step 2: Convert to fraction form
    230,635.92/318,292.26 = 128,676.76/x
  3. Step 3: Cross multiply
    230,635.92x = 318,292.26 × 128,676.76
  4. Step 4: Simplify right side
    230,635.92x = 40,956,816,749.88
  5. Step 5: Solve for x
    x = 40,956,816,749.88/230,635.92
  6. Step 6: Final answer
    x = 177,582.12

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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.