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Finding the Fourth Proportional to 329,892.75, 455,254.43 and 178,989.75

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Solution

The fourth proportional to 329,892.75, 455,254.43 and 178,989.75 is: 247,007.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,892.75 : 455,254.43 = 178,989.75 : x
  2. Step 2: Convert to fraction form
    329,892.75/455,254.43 = 178,989.75/x
  3. Step 3: Cross multiply
    329,892.75x = 455,254.43 × 178,989.75
  4. Step 4: Simplify right side
    329,892.75x = 81,485,875,717.14
  5. Step 5: Solve for x
    x = 81,485,875,717.14/329,892.75
  6. Step 6: Final answer
    x = 247,007.17

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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.