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Finding the Fourth Proportional to 306,984.50, 423,651.32 and 171,018.37

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Solution

The fourth proportional to 306,984.50, 423,651.32 and 171,018.37 is: 236,012.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,984.50 : 423,651.32 = 171,018.37 : x
  2. Step 2: Convert to fraction form
    306,984.50/423,651.32 = 171,018.37/x
  3. Step 3: Cross multiply
    306,984.50x = 423,651.32 × 171,018.37
  4. Step 4: Simplify right side
    306,984.50x = 72,452,157,563.17
  5. Step 5: Solve for x
    x = 72,452,157,563.17/306,984.50
  6. Step 6: Final answer
    x = 236,012.43

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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.