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Finding the Fourth Proportional to 496,908.84, 685,682.70 and 279,141.96

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Solution

The fourth proportional to 496,908.84, 685,682.70 and 279,141.96 is: 385,186.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,908.84 : 685,682.70 = 279,141.96 : x
  2. Step 2: Convert to fraction form
    496,908.84/685,682.70 = 279,141.96/x
  3. Step 3: Cross multiply
    496,908.84x = 685,682.70 × 279,141.96
  4. Step 4: Simplify right side
    496,908.84x = 191,402,812,816.09
  5. Step 5: Solve for x
    x = 191,402,812,816.09/496,908.84
  6. Step 6: Final answer
    x = 385,186.97

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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.