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Finding the Fourth Proportional to 479,326.89, 661,710.80 and 298,097.21

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Solution

The fourth proportional to 479,326.89, 661,710.80 and 298,097.21 is: 411,523.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,326.89 : 661,710.80 = 298,097.21 : x
  2. Step 2: Convert to fraction form
    479,326.89/661,710.80 = 298,097.21/x
  3. Step 3: Cross multiply
    479,326.89x = 661,710.80 × 298,097.21
  4. Step 4: Simplify right side
    479,326.89x = 197,254,140,743.56
  5. Step 5: Solve for x
    x = 197,254,140,743.56/479,326.89
  6. Step 6: Final answer
    x = 411,523.21

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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.