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Finding the Fourth Proportional to 214,485.76, 321,732.42 and 74,248.84

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Solution

The fourth proportional to 214,485.76, 321,732.42 and 74,248.84 is: 111,374.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,485.76 : 321,732.42 = 74,248.84 : x
  2. Step 2: Convert to fraction form
    214,485.76/321,732.42 = 74,248.84/x
  3. Step 3: Cross multiply
    214,485.76x = 321,732.42 × 74,248.84
  4. Step 4: Simplify right side
    214,485.76x = 23,888,258,975.39
  5. Step 5: Solve for x
    x = 23,888,258,975.39/214,485.76
  6. Step 6: Final answer
    x = 111,374.57

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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.