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Finding the Fourth Proportional to 272,431.50, 408,643.15 and 122,565.96

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Solution

The fourth proportional to 272,431.50, 408,643.15 and 122,565.96 is: 183,847.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,431.50 : 408,643.15 = 122,565.96 : x
  2. Step 2: Convert to fraction form
    272,431.50/408,643.15 = 122,565.96/x
  3. Step 3: Cross multiply
    272,431.50x = 408,643.15 × 122,565.96
  4. Step 4: Simplify right side
    272,431.50x = 50,085,740,245.29
  5. Step 5: Solve for x
    x = 50,085,740,245.29/272,431.50
  6. Step 6: Final answer
    x = 183,847.10

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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.