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Finding the Fourth Proportional to 312,281.76, 468,087.36 and 134,872.32

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Solution

The fourth proportional to 312,281.76, 468,087.36 and 134,872.32 is: 202,163.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,281.76 : 468,087.36 = 134,872.32 : x
  2. Step 2: Convert to fraction form
    312,281.76/468,087.36 = 134,872.32/x
  3. Step 3: Cross multiply
    312,281.76x = 468,087.36 × 134,872.32
  4. Step 4: Simplify right side
    312,281.76x = 63,132,028,205.88
  5. Step 5: Solve for x
    x = 63,132,028,205.88/312,281.76
  6. Step 6: Final answer
    x = 202,163.67

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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.