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Finding the Fourth Proportional to 404,138.80, 606,864.30 and 271,606.60

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Solution

The fourth proportional to 404,138.80, 606,864.30 and 271,606.60 is: 407,850.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,138.80 : 606,864.30 = 271,606.60 : x
  2. Step 2: Convert to fraction form
    404,138.80/606,864.30 = 271,606.60/x
  3. Step 3: Cross multiply
    404,138.80x = 606,864.30 × 271,606.60
  4. Step 4: Simplify right side
    404,138.80x = 164,828,349,184.38
  5. Step 5: Solve for x
    x = 164,828,349,184.38/404,138.80
  6. Step 6: Final answer
    x = 407,850.84

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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.