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Finding the Fourth Proportional to 479,269.20, 661,391.55 and 264,409.77

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Solution

The fourth proportional to 479,269.20, 661,391.55 and 264,409.77 is: 364,885.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,269.20 : 661,391.55 = 264,409.77 : x
  2. Step 2: Convert to fraction form
    479,269.20/661,391.55 = 264,409.77/x
  3. Step 3: Cross multiply
    479,269.20x = 661,391.55 × 264,409.77
  4. Step 4: Simplify right side
    479,269.20x = 174,878,387,615.44
  5. Step 5: Solve for x
    x = 174,878,387,615.44/479,269.20
  6. Step 6: Final answer
    x = 364,885.51

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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.