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Finding the Fourth Proportional to 283,392.26, 391,081.67 and 154,330.95

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Solution

The fourth proportional to 283,392.26, 391,081.67 and 154,330.95 is: 212,976.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,392.26 : 391,081.67 = 154,330.95 : x
  2. Step 2: Convert to fraction form
    283,392.26/391,081.67 = 154,330.95/x
  3. Step 3: Cross multiply
    283,392.26x = 391,081.67 × 154,330.95
  4. Step 4: Simplify right side
    283,392.26x = 60,356,005,658.69
  5. Step 5: Solve for x
    x = 60,356,005,658.69/283,392.26
  6. Step 6: Final answer
    x = 212,976.90

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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.