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Finding the Fourth Proportional to 214,239.80, 321,358.08 and 64,479.44

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Solution

The fourth proportional to 214,239.80, 321,358.08 and 64,479.44 is: 96,718.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,239.80 : 321,358.08 = 64,479.44 : x
  2. Step 2: Convert to fraction form
    214,239.80/321,358.08 = 64,479.44/x
  3. Step 3: Cross multiply
    214,239.80x = 321,358.08 × 64,479.44
  4. Step 4: Simplify right side
    214,239.80x = 20,720,989,037.88
  5. Step 5: Solve for x
    x = 20,720,989,037.88/214,239.80
  6. Step 6: Final answer
    x = 96,718.67

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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.