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Finding the Fourth Proportional to 330,560.43, 495,549.84 and 131,020.88

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Solution

The fourth proportional to 330,560.43, 495,549.84 and 131,020.88 is: 196,416.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,560.43 : 495,549.84 = 131,020.88 : x
  2. Step 2: Convert to fraction form
    330,560.43/495,549.84 = 131,020.88/x
  3. Step 3: Cross multiply
    330,560.43x = 495,549.84 × 131,020.88
  4. Step 4: Simplify right side
    330,560.43x = 64,927,374,226.68
  5. Step 5: Solve for x
    x = 64,927,374,226.68/330,560.43
  6. Step 6: Final answer
    x = 196,416.05

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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.