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Finding the Fourth Proportional to 214,460.80, 321,769.20 and 74,233.60

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Solution

The fourth proportional to 214,460.80, 321,769.20 and 74,233.60 is: 111,377.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,460.80 : 321,769.20 = 74,233.60 : x
  2. Step 2: Convert to fraction form
    214,460.80/321,769.20 = 74,233.60/x
  3. Step 3: Cross multiply
    214,460.80x = 321,769.20 × 74,233.60
  4. Step 4: Simplify right side
    214,460.80x = 23,886,086,085.12
  5. Step 5: Solve for x
    x = 23,886,086,085.12/214,460.80
  6. Step 6: Final answer
    x = 111,377.40

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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.