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Finding the Fourth Proportional to 395,516.89, 545,662.66 and 292,398.69

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Solution

The fourth proportional to 395,516.89, 545,662.66 and 292,398.69 is: 403,398.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,516.89 : 545,662.66 = 292,398.69 : x
  2. Step 2: Convert to fraction form
    395,516.89/545,662.66 = 292,398.69/x
  3. Step 3: Cross multiply
    395,516.89x = 545,662.66 × 292,398.69
  4. Step 4: Simplify right side
    395,516.89x = 159,551,046,965.92
  5. Step 5: Solve for x
    x = 159,551,046,965.92/395,516.89
  6. Step 6: Final answer
    x = 403,398.82

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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.