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Finding the Fourth Proportional to 220,410.92, 304,200.31 and 134,419.80

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Solution

The fourth proportional to 220,410.92, 304,200.31 and 134,419.80 is: 185,519.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,410.92 : 304,200.31 = 134,419.80 : x
  2. Step 2: Convert to fraction form
    220,410.92/304,200.31 = 134,419.80/x
  3. Step 3: Cross multiply
    220,410.92x = 304,200.31 × 134,419.80
  4. Step 4: Simplify right side
    220,410.92x = 40,890,545,886.88
  5. Step 5: Solve for x
    x = 40,890,545,886.88/220,410.92
  6. Step 6: Final answer
    x = 185,519.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.