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Finding the Fourth Proportional to 404,438.40, 606,787.20 and 271,468.80

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Solution

The fourth proportional to 404,438.40, 606,787.20 and 271,468.80 is: 407,290.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,438.40 : 606,787.20 = 271,468.80 : x
  2. Step 2: Convert to fraction form
    404,438.40/606,787.20 = 271,468.80/x
  3. Step 3: Cross multiply
    404,438.40x = 606,787.20 × 271,468.80
  4. Step 4: Simplify right side
    404,438.40x = 164,723,793,039.36
  5. Step 5: Solve for x
    x = 164,723,793,039.36/404,438.40
  6. Step 6: Final answer
    x = 407,290.19

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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.