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Finding the Fourth Proportional to 230,265.59, 345,429.82 and 80,471.12

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Solution

The fourth proportional to 230,265.59, 345,429.82 and 80,471.12 is: 120,717.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,265.59 : 345,429.82 = 80,471.12 : x
  2. Step 2: Convert to fraction form
    230,265.59/345,429.82 = 80,471.12/x
  3. Step 3: Cross multiply
    230,265.59x = 345,429.82 × 80,471.12
  4. Step 4: Simplify right side
    230,265.59x = 27,797,124,360.63
  5. Step 5: Solve for x
    x = 27,797,124,360.63/230,265.59
  6. Step 6: Final answer
    x = 120,717.67

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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.