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Finding the Fourth Proportional to 611,185.25, 843,489.02 and 356,618.45

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Solution

The fourth proportional to 611,185.25, 843,489.02 and 356,618.45 is: 492,164.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,185.25 : 843,489.02 = 356,618.45 : x
  2. Step 2: Convert to fraction form
    611,185.25/843,489.02 = 356,618.45/x
  3. Step 3: Cross multiply
    611,185.25x = 843,489.02 × 356,618.45
  4. Step 4: Simplify right side
    611,185.25x = 300,803,749,904.69
  5. Step 5: Solve for x
    x = 300,803,749,904.69/611,185.25
  6. Step 6: Final answer
    x = 492,164.61

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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.