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Finding the Fourth Proportional to 341,321.76, 512,055.54 and 130,957.88

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Solution

The fourth proportional to 341,321.76, 512,055.54 and 130,957.88 is: 196,464.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,321.76 : 512,055.54 = 130,957.88 : x
  2. Step 2: Convert to fraction form
    341,321.76/512,055.54 = 130,957.88/x
  3. Step 3: Cross multiply
    341,321.76x = 512,055.54 × 130,957.88
  4. Step 4: Simplify right side
    341,321.76x = 67,057,705,400.38
  5. Step 5: Solve for x
    x = 67,057,705,400.38/341,321.76
  6. Step 6: Final answer
    x = 196,464.78

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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.