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Finding the Fourth Proportional to 307,940.91, 425,366.46 and 247,738.29

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Solution

The fourth proportional to 307,940.91, 425,366.46 and 247,738.29 is: 342,207.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,940.91 : 425,366.46 = 247,738.29 : x
  2. Step 2: Convert to fraction form
    307,940.91/425,366.46 = 247,738.29/x
  3. Step 3: Cross multiply
    307,940.91x = 425,366.46 × 247,738.29
  4. Step 4: Simplify right side
    307,940.91x = 105,379,559,423.75
  5. Step 5: Solve for x
    x = 105,379,559,423.75/307,940.91
  6. Step 6: Final answer
    x = 342,207.08

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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.