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Finding the Fourth Proportional to 329,798.40, 455,121.02 and 178,895.40

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Solution

The fourth proportional to 329,798.40, 455,121.02 and 178,895.40 is: 246,875.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,798.40 : 455,121.02 = 178,895.40 : x
  2. Step 2: Convert to fraction form
    329,798.40/455,121.02 = 178,895.40/x
  3. Step 3: Cross multiply
    329,798.40x = 455,121.02 × 178,895.40
  4. Step 4: Simplify right side
    329,798.40x = 81,419,056,921.31
  5. Step 5: Solve for x
    x = 81,419,056,921.31/329,798.40
  6. Step 6: Final answer
    x = 246,875.23

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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.