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Finding the Fourth Proportional to 479,308.39, 661,504.15 and 275,358.93

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Solution

The fourth proportional to 479,308.39, 661,504.15 and 275,358.93 is: 380,028.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,308.39 : 661,504.15 = 275,358.93 : x
  2. Step 2: Convert to fraction form
    479,308.39/661,504.15 = 275,358.93/x
  3. Step 3: Cross multiply
    479,308.39x = 661,504.15 × 275,358.93
  4. Step 4: Simplify right side
    479,308.39x = 182,151,072,798.12
  5. Step 5: Solve for x
    x = 182,151,072,798.12/479,308.39
  6. Step 6: Final answer
    x = 380,028.97

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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.