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Finding the Fourth Proportional to 375,659.21, 518,400.57 and 203,569.64

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Solution

The fourth proportional to 375,659.21, 518,400.57 and 203,569.64 is: 280,921.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,659.21 : 518,400.57 = 203,569.64 : x
  2. Step 2: Convert to fraction form
    375,659.21/518,400.57 = 203,569.64/x
  3. Step 3: Cross multiply
    375,659.21x = 518,400.57 × 203,569.64
  4. Step 4: Simplify right side
    375,659.21x = 105,530,614,818.69
  5. Step 5: Solve for x
    x = 105,530,614,818.69/375,659.21
  6. Step 6: Final answer
    x = 280,921.15

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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.