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Finding the Fourth Proportional to 307,367.22, 424,168.61 and 171,409.76

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Solution

The fourth proportional to 307,367.22, 424,168.61 and 171,409.76 is: 236,546.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,367.22 : 424,168.61 = 171,409.76 : x
  2. Step 2: Convert to fraction form
    307,367.22/424,168.61 = 171,409.76/x
  3. Step 3: Cross multiply
    307,367.22x = 424,168.61 × 171,409.76
  4. Step 4: Simplify right side
    307,367.22x = 72,706,637,376.54
  5. Step 5: Solve for x
    x = 72,706,637,376.54/307,367.22
  6. Step 6: Final answer
    x = 236,546.49

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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.