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Finding the Fourth Proportional to 331,372.80, 497,059.20 and 120,983.40

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Solution

The fourth proportional to 331,372.80, 497,059.20 and 120,983.40 is: 181,475.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,372.80 : 497,059.20 = 120,983.40 : x
  2. Step 2: Convert to fraction form
    331,372.80/497,059.20 = 120,983.40/x
  3. Step 3: Cross multiply
    331,372.80x = 497,059.20 × 120,983.40
  4. Step 4: Simplify right side
    331,372.80x = 60,135,912,017.28
  5. Step 5: Solve for x
    x = 60,135,912,017.28/331,372.80
  6. Step 6: Final answer
    x = 181,475.10

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1.5x scale

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.