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Finding the Fourth Proportional to 307,095.22, 423,804.45 and 171,129.34

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Solution

The fourth proportional to 307,095.22, 423,804.45 and 171,129.34 is: 236,165.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,095.22 : 423,804.45 = 171,129.34 : x
  2. Step 2: Convert to fraction form
    307,095.22/423,804.45 = 171,129.34/x
  3. Step 3: Cross multiply
    307,095.22x = 423,804.45 × 171,129.34
  4. Step 4: Simplify right side
    307,095.22x = 72,525,375,817.56
  5. Step 5: Solve for x
    x = 72,525,375,817.56/307,095.22
  6. Step 6: Final answer
    x = 236,165.76

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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.