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Finding the Fourth Proportional to 408,704.88, 564,090.76 and 270,640.38

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Solution

The fourth proportional to 408,704.88, 564,090.76 and 270,640.38 is: 373,535.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,704.88 : 564,090.76 = 270,640.38 : x
  2. Step 2: Convert to fraction form
    408,704.88/564,090.76 = 270,640.38/x
  3. Step 3: Cross multiply
    408,704.88x = 564,090.76 × 270,640.38
  4. Step 4: Simplify right side
    408,704.88x = 152,665,736,964.29
  5. Step 5: Solve for x
    x = 152,665,736,964.29/408,704.88
  6. Step 6: Final answer
    x = 373,535.39

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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.