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Finding the Fourth Proportional to 496,896.31, 685,733.61 and 279,143.20

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Solution

The fourth proportional to 496,896.31, 685,733.61 and 279,143.20 is: 385,227.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,896.31 : 685,733.61 = 279,143.20 : x
  2. Step 2: Convert to fraction form
    496,896.31/685,733.61 = 279,143.20/x
  3. Step 3: Cross multiply
    496,896.31x = 685,733.61 × 279,143.20
  4. Step 4: Simplify right side
    496,896.31x = 191,417,874,242.95
  5. Step 5: Solve for x
    x = 191,417,874,242.95/496,896.31
  6. Step 6: Final answer
    x = 385,227.00

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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.