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Finding the Fourth Proportional to 479,447.94, 661,654.03 and 261,668.50

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Solution

The fourth proportional to 479,447.94, 661,654.03 and 261,668.50 is: 361,111.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,447.94 : 661,654.03 = 261,668.50 : x
  2. Step 2: Convert to fraction form
    479,447.94/661,654.03 = 261,668.50/x
  3. Step 3: Cross multiply
    479,447.94x = 661,654.03 × 261,668.50
  4. Step 4: Simplify right side
    479,447.94x = 173,134,017,549.06
  5. Step 5: Solve for x
    x = 173,134,017,549.06/479,447.94
  6. Step 6: Final answer
    x = 361,111.19

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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.