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Finding the Fourth Proportional to 272,216.63, 408,323.55 and 69,811.81

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Solution

The fourth proportional to 272,216.63, 408,323.55 and 69,811.81 is: 104,717.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,216.63 : 408,323.55 = 69,811.81 : x
  2. Step 2: Convert to fraction form
    272,216.63/408,323.55 = 69,811.81/x
  3. Step 3: Cross multiply
    272,216.63x = 408,323.55 × 69,811.81
  4. Step 4: Simplify right side
    272,216.63x = 28,505,806,091.13
  5. Step 5: Solve for x
    x = 28,505,806,091.13/272,216.63
  6. Step 6: Final answer
    x = 104,717.36

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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.