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Finding the Fourth Proportional to 299,980.60, 450,095.97 and 131,621.92

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Solution

The fourth proportional to 299,980.60, 450,095.97 and 131,621.92 is: 197,487.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,980.60 : 450,095.97 = 131,621.92 : x
  2. Step 2: Convert to fraction form
    299,980.60/450,095.97 = 131,621.92/x
  3. Step 3: Cross multiply
    299,980.60x = 450,095.97 × 131,621.92
  4. Step 4: Simplify right side
    299,980.60x = 59,242,495,755.66
  5. Step 5: Solve for x
    x = 59,242,495,755.66/299,980.60
  6. Step 6: Final answer
    x = 197,487.76

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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.