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Finding the Fourth Proportional to 214,148.40, 321,125.40 and 80,984.40

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Solution

The fourth proportional to 214,148.40, 321,125.40 and 80,984.40 is: 121,439.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,148.40 : 321,125.40 = 80,984.40 : x
  2. Step 2: Convert to fraction form
    214,148.40/321,125.40 = 80,984.40/x
  3. Step 3: Cross multiply
    214,148.40x = 321,125.40 × 80,984.40
  4. Step 4: Simplify right side
    214,148.40x = 26,006,147,843.76
  5. Step 5: Solve for x
    x = 26,006,147,843.76/214,148.40
  6. Step 6: Final answer
    x = 121,439.84

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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.