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Finding the Fourth Proportional to 319,960.40, 479,249.40 and 264,664.40

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Solution

The fourth proportional to 319,960.40, 479,249.40 and 264,664.40 is: 396,424.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,960.40 : 479,249.40 = 264,664.40 : x
  2. Step 2: Convert to fraction form
    319,960.40/479,249.40 = 264,664.40/x
  3. Step 3: Cross multiply
    319,960.40x = 479,249.40 × 264,664.40
  4. Step 4: Simplify right side
    319,960.40x = 126,840,254,901.36
  5. Step 5: Solve for x
    x = 126,840,254,901.36/319,960.40
  6. Step 6: Final answer
    x = 396,424.85

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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.