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Finding the Fourth Proportional to 431,991.60, 648,276.63 and 179,272.32

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Solution

The fourth proportional to 431,991.60, 648,276.63 and 179,272.32 is: 269,028.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,991.60 : 648,276.63 = 179,272.32 : x
  2. Step 2: Convert to fraction form
    431,991.60/648,276.63 = 179,272.32/x
  3. Step 3: Cross multiply
    431,991.60x = 648,276.63 × 179,272.32
  4. Step 4: Simplify right side
    431,991.60x = 116,218,055,461.88
  5. Step 5: Solve for x
    x = 116,218,055,461.88/431,991.60
  6. Step 6: Final answer
    x = 269,028.51

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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.