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Finding the Fourth Proportional to 423,381.60, 635,335.92 and 263,771.10

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Solution

The fourth proportional to 423,381.60, 635,335.92 and 263,771.10 is: 395,820.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,381.60 : 635,335.92 = 263,771.10 : x
  2. Step 2: Convert to fraction form
    423,381.60/635,335.92 = 263,771.10/x
  3. Step 3: Cross multiply
    423,381.60x = 635,335.92 × 263,771.10
  4. Step 4: Simplify right side
    423,381.60x = 167,583,254,487.91
  5. Step 5: Solve for x
    x = 167,583,254,487.91/423,381.60
  6. Step 6: Final answer
    x = 395,820.83

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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.