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Finding the Fourth Proportional to 217,745.96, 326,491.79 and 84,470.47

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Solution

The fourth proportional to 217,745.96, 326,491.79 and 84,470.47 is: 126,656.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,745.96 : 326,491.79 = 84,470.47 : x
  2. Step 2: Convert to fraction form
    217,745.96/326,491.79 = 84,470.47/x
  3. Step 3: Cross multiply
    217,745.96x = 326,491.79 × 84,470.47
  4. Step 4: Simplify right side
    217,745.96x = 27,578,913,713.86
  5. Step 5: Solve for x
    x = 27,578,913,713.86/217,745.96
  6. Step 6: Final answer
    x = 126,656.38

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1.5x scale

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.