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Finding the Fourth Proportional to 375,828.72, 518,639.76 and 206,062.56

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Solution

The fourth proportional to 375,828.72, 518,639.76 and 206,062.56 is: 284,364.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,828.72 : 518,639.76 = 206,062.56 : x
  2. Step 2: Convert to fraction form
    375,828.72/518,639.76 = 206,062.56/x
  3. Step 3: Cross multiply
    375,828.72x = 518,639.76 × 206,062.56
  4. Step 4: Simplify right side
    375,828.72x = 106,872,236,663.39
  5. Step 5: Solve for x
    x = 106,872,236,663.39/375,828.72
  6. Step 6: Final answer
    x = 284,364.21

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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.