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Finding the Fourth Proportional to 214,576.40, 321,864.60 and 56,820.80

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Solution

The fourth proportional to 214,576.40, 321,864.60 and 56,820.80 is: 85,231.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,576.40 : 321,864.60 = 56,820.80 : x
  2. Step 2: Convert to fraction form
    214,576.40/321,864.60 = 56,820.80/x
  3. Step 3: Cross multiply
    214,576.40x = 321,864.60 × 56,820.80
  4. Step 4: Simplify right side
    214,576.40x = 18,288,604,063.68
  5. Step 5: Solve for x
    x = 18,288,604,063.68/214,576.40
  6. Step 6: Final answer
    x = 85,231.20

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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.