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Finding the Fourth Proportional to 214,638.28, 321,957.42 and 74,396.92

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Solution

The fourth proportional to 214,638.28, 321,957.42 and 74,396.92 is: 111,595.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,638.28 : 321,957.42 = 74,396.92 : x
  2. Step 2: Convert to fraction form
    214,638.28/321,957.42 = 74,396.92/x
  3. Step 3: Cross multiply
    214,638.28x = 321,957.42 × 74,396.92
  4. Step 4: Simplify right side
    214,638.28x = 23,952,640,419.15
  5. Step 5: Solve for x
    x = 23,952,640,419.15/214,638.28
  6. Step 6: Final answer
    x = 111,595.38

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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.