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Finding the Fourth Proportional to 374,491.20, 516,760.80 and 213,336.66

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Solution

The fourth proportional to 374,491.20, 516,760.80 and 213,336.66 is: 294,383.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,491.20 : 516,760.80 = 213,336.66 : x
  2. Step 2: Convert to fraction form
    374,491.20/516,760.80 = 213,336.66/x
  3. Step 3: Cross multiply
    374,491.20x = 516,760.80 × 213,336.66
  4. Step 4: Simplify right side
    374,491.20x = 110,244,023,090.93
  5. Step 5: Solve for x
    x = 110,244,023,090.93/374,491.20
  6. Step 6: Final answer
    x = 294,383.48

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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.