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Finding the Fourth Proportional to 306,627.87, 423,142.22 and 170,661.86

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Solution

The fourth proportional to 306,627.87, 423,142.22 and 170,661.86 is: 235,511.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,627.87 : 423,142.22 = 170,661.86 : x
  2. Step 2: Convert to fraction form
    306,627.87/423,142.22 = 170,661.86/x
  3. Step 3: Cross multiply
    306,627.87x = 423,142.22 × 170,661.86
  4. Step 4: Simplify right side
    306,627.87x = 72,214,239,794.24
  5. Step 5: Solve for x
    x = 72,214,239,794.24/306,627.87
  6. Step 6: Final answer
    x = 235,511.01

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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.