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Finding the Fourth Proportional to 399,856.89, 599,268.66 and 299,227.56

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Solution

The fourth proportional to 399,856.89, 599,268.66 and 299,227.56 is: 448,454.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,856.89 : 599,268.66 = 299,227.56 : x
  2. Step 2: Convert to fraction form
    399,856.89/599,268.66 = 299,227.56/x
  3. Step 3: Cross multiply
    399,856.89x = 599,268.66 × 299,227.56
  4. Step 4: Simplify right side
    399,856.89x = 179,317,698,916.27
  5. Step 5: Solve for x
    x = 179,317,698,916.27/399,856.89
  6. Step 6: Final answer
    x = 448,454.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.