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Finding the Fourth Proportional to 214,440.80, 321,661.20 and 74,184.80

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Solution

The fourth proportional to 214,440.80, 321,661.20 and 74,184.80 is: 111,277.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,440.80 : 321,661.20 = 74,184.80 : x
  2. Step 2: Convert to fraction form
    214,440.80/321,661.20 = 74,184.80/x
  3. Step 3: Cross multiply
    214,440.80x = 321,661.20 × 74,184.80
  4. Step 4: Simplify right side
    214,440.80x = 23,862,371,789.76
  5. Step 5: Solve for x
    x = 23,862,371,789.76/214,440.80
  6. Step 6: Final answer
    x = 111,277.20

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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.