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Finding the Fourth Proportional to 423,474.28, 635,474.76 and 263,863.60

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Solution

The fourth proportional to 423,474.28, 635,474.76 and 263,863.60 is: 395,959.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,474.28 : 635,474.76 = 263,863.60 : x
  2. Step 2: Convert to fraction form
    423,474.28/635,474.76 = 263,863.60/x
  3. Step 3: Cross multiply
    423,474.28x = 635,474.76 × 263,863.60
  4. Step 4: Simplify right side
    423,474.28x = 167,678,657,882.74
  5. Step 5: Solve for x
    x = 167,678,657,882.74/423,474.28
  6. Step 6: Final answer
    x = 395,959.49

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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.