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Finding the Fourth Proportional to 479,644.55, 661,905.42 and 264,780

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Solution

The fourth proportional to 479,644.55, 661,905.42 and 264,780 is: 365,394.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,644.55 : 661,905.42 = 264,780 : x
  2. Step 2: Convert to fraction form
    479,644.55/661,905.42 = 264,780/x
  3. Step 3: Cross multiply
    479,644.55x = 661,905.42 × 264,780
  4. Step 4: Simplify right side
    479,644.55x = 175,259,316,114.68
  5. Step 5: Solve for x
    x = 175,259,316,114.68/479,644.55
  6. Step 6: Final answer
    x = 365,394.16

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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.