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Finding the Fourth Proportional to 307,855.07, 424,835.95 and 171,891.34

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Solution

The fourth proportional to 307,855.07, 424,835.95 and 171,891.34 is: 237,207.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,855.07 : 424,835.95 = 171,891.34 : x
  2. Step 2: Convert to fraction form
    307,855.07/424,835.95 = 171,891.34/x
  3. Step 3: Cross multiply
    307,855.07x = 424,835.95 × 171,891.34
  4. Step 4: Simplify right side
    307,855.07x = 73,025,620,725.67
  5. Step 5: Solve for x
    x = 73,025,620,725.67/307,855.07
  6. Step 6: Final answer
    x = 237,207.79

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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.