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Finding the Fourth Proportional to 548,039.92, 756,243.15 and 306,316.97

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Solution

The fourth proportional to 548,039.92, 756,243.15 and 306,316.97 is: 422,688.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,039.92 : 756,243.15 = 306,316.97 : x
  2. Step 2: Convert to fraction form
    548,039.92/756,243.15 = 306,316.97/x
  3. Step 3: Cross multiply
    548,039.92x = 756,243.15 × 306,316.97
  4. Step 4: Simplify right side
    548,039.92x = 231,650,110,291.26
  5. Step 5: Solve for x
    x = 231,650,110,291.26/548,039.92
  6. Step 6: Final answer
    x = 422,688.39

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1.5x scale

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.