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Finding the Fourth Proportional to 283,501.28, 391,148.07 and 168,687.89

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Solution

The fourth proportional to 283,501.28, 391,148.07 and 168,687.89 is: 232,739.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,501.28 : 391,148.07 = 168,687.89 : x
  2. Step 2: Convert to fraction form
    283,501.28/391,148.07 = 168,687.89/x
  3. Step 3: Cross multiply
    283,501.28x = 391,148.07 × 168,687.89
  4. Step 4: Simplify right side
    283,501.28x = 65,981,942,605.87
  5. Step 5: Solve for x
    x = 65,981,942,605.87/283,501.28
  6. Step 6: Final answer
    x = 232,739.49

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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.