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Finding the Fourth Proportional to 375,391.79, 518,040.22 and 203,309.66

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Solution

The fourth proportional to 375,391.79, 518,040.22 and 203,309.66 is: 280,567.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,391.79 : 518,040.22 = 203,309.66 : x
  2. Step 2: Convert to fraction form
    375,391.79/518,040.22 = 203,309.66/x
  3. Step 3: Cross multiply
    375,391.79x = 518,040.22 × 203,309.66
  4. Step 4: Simplify right side
    375,391.79x = 105,322,579,248.58
  5. Step 5: Solve for x
    x = 105,322,579,248.58/375,391.79
  6. Step 6: Final answer
    x = 280,567.08

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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.