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Finding the Fourth Proportional to 312,628.08, 468,942.08 and 75,969.12

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Solution

The fourth proportional to 312,628.08, 468,942.08 and 75,969.12 is: 113,953.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,628.08 : 468,942.08 = 75,969.12 : x
  2. Step 2: Convert to fraction form
    312,628.08/468,942.08 = 75,969.12/x
  3. Step 3: Cross multiply
    312,628.08x = 468,942.08 × 75,969.12
  4. Step 4: Simplify right side
    312,628.08x = 35,625,117,148.57
  5. Step 5: Solve for x
    x = 35,625,117,148.57/312,628.08
  6. Step 6: Final answer
    x = 113,953.67

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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.