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Finding the Fourth Proportional to 230,913.40, 346,416.90 and 131,121.40

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Solution

The fourth proportional to 230,913.40, 346,416.90 and 131,121.40 is: 196,708.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,913.40 : 346,416.90 = 131,121.40 : x
  2. Step 2: Convert to fraction form
    230,913.40/346,416.90 = 131,121.40/x
  3. Step 3: Cross multiply
    230,913.40x = 346,416.90 × 131,121.40
  4. Step 4: Simplify right side
    230,913.40x = 45,422,668,911.66
  5. Step 5: Solve for x
    x = 45,422,668,911.66/230,913.40
  6. Step 6: Final answer
    x = 196,708.67

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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.