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Finding the Fourth Proportional to 306,308.88, 459,163.32 and 171,438.81

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Solution

The fourth proportional to 306,308.88, 459,163.32 and 171,438.81 is: 256,990.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,308.88 : 459,163.32 = 171,438.81 : x
  2. Step 2: Convert to fraction form
    306,308.88/459,163.32 = 171,438.81/x
  3. Step 3: Cross multiply
    306,308.88x = 459,163.32 × 171,438.81
  4. Step 4: Simplify right side
    306,308.88x = 78,718,413,176.45
  5. Step 5: Solve for x
    x = 78,718,413,176.45/306,308.88
  6. Step 6: Final answer
    x = 256,990.31

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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.