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Finding the Fourth Proportional to 307,641.62, 424,544.63 and 171,674.12

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Solution

The fourth proportional to 307,641.62, 424,544.63 and 171,674.12 is: 236,909.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,641.62 : 424,544.63 = 171,674.12 : x
  2. Step 2: Convert to fraction form
    307,641.62/424,544.63 = 171,674.12/x
  3. Step 3: Cross multiply
    307,641.62x = 424,544.63 × 171,674.12
  4. Step 4: Simplify right side
    307,641.62x = 72,883,325,958.97
  5. Step 5: Solve for x
    x = 72,883,325,958.97/307,641.62
  6. Step 6: Final answer
    x = 236,909.83

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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.