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Finding the Fourth Proportional to 214,048.40, 321,121.20 and 125,256.20

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Solution

The fourth proportional to 214,048.40, 321,121.20 and 125,256.20 is: 187,912.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,048.40 : 321,121.20 = 125,256.20 : x
  2. Step 2: Convert to fraction form
    214,048.40/321,121.20 = 125,256.20/x
  3. Step 3: Cross multiply
    214,048.40x = 321,121.20 × 125,256.20
  4. Step 4: Simplify right side
    214,048.40x = 40,222,421,251.44
  5. Step 5: Solve for x
    x = 40,222,421,251.44/214,048.40
  6. Step 6: Final answer
    x = 187,912.74

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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.