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Finding the Fourth Proportional to 307,168.73, 423,894.93 and 171,211.43

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Solution

The fourth proportional to 307,168.73, 423,894.93 and 171,211.43 is: 236,272.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,168.73 : 423,894.93 = 171,211.43 : x
  2. Step 2: Convert to fraction form
    307,168.73/423,894.93 = 171,211.43/x
  3. Step 3: Cross multiply
    307,168.73x = 423,894.93 × 171,211.43
  4. Step 4: Simplify right side
    307,168.73x = 72,575,655,015.58
  5. Step 5: Solve for x
    x = 72,575,655,015.58/307,168.73
  6. Step 6: Final answer
    x = 236,272.93

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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.