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Finding the Fourth Proportional to 479,654.21, 661,905.46 and 264,789.66

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Solution

The fourth proportional to 479,654.21, 661,905.46 and 264,789.66 is: 365,400.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,654.21 : 661,905.46 = 264,789.66 : x
  2. Step 2: Convert to fraction form
    479,654.21/661,905.46 = 264,789.66/x
  3. Step 3: Cross multiply
    479,654.21x = 661,905.46 × 264,789.66
  4. Step 4: Simplify right side
    479,654.21x = 175,265,720,423.10
  5. Step 5: Solve for x
    x = 175,265,720,423.10/479,654.21
  6. Step 6: Final answer
    x = 365,400.15

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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.