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Finding the Fourth Proportional to 398,259.99, 597,260.82 and 131,949

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Solution

The fourth proportional to 398,259.99, 597,260.82 and 131,949 is: 197,880.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,259.99 : 597,260.82 = 131,949 : x
  2. Step 2: Convert to fraction form
    398,259.99/597,260.82 = 131,949/x
  3. Step 3: Cross multiply
    398,259.99x = 597,260.82 × 131,949
  4. Step 4: Simplify right side
    398,259.99x = 78,807,967,319.67
  5. Step 5: Solve for x
    x = 78,807,967,319.67/398,259.99
  6. Step 6: Final answer
    x = 197,880.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.