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Finding the Fourth Proportional to 352,872.59, 486,073.76 and 284,698.79

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Solution

The fourth proportional to 352,872.59, 486,073.76 and 284,698.79 is: 392,165.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,872.59 : 486,073.76 = 284,698.79 : x
  2. Step 2: Convert to fraction form
    352,872.59/486,073.76 = 284,698.79/x
  3. Step 3: Cross multiply
    352,872.59x = 486,073.76 × 284,698.79
  4. Step 4: Simplify right side
    352,872.59x = 138,384,607,468.89
  5. Step 5: Solve for x
    x = 138,384,607,468.89/352,872.59
  6. Step 6: Final answer
    x = 392,165.94

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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.