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Finding the Fourth Proportional to 307,251.18, 424,008.42 and 171,293.67

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Solution

The fourth proportional to 307,251.18, 424,008.42 and 171,293.67 is: 236,386.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,251.18 : 424,008.42 = 171,293.67 : x
  2. Step 2: Convert to fraction form
    307,251.18/424,008.42 = 171,293.67/x
  3. Step 3: Cross multiply
    307,251.18x = 424,008.42 × 171,293.67
  4. Step 4: Simplify right side
    307,251.18x = 72,629,958,372.70
  5. Step 5: Solve for x
    x = 72,629,958,372.70/307,251.18
  6. Step 6: Final answer
    x = 236,386.26

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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.