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Finding the Fourth Proportional to 331,202.30, 496,803.45 and 120,812.90

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Solution

The fourth proportional to 331,202.30, 496,803.45 and 120,812.90 is: 181,219.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,202.30 : 496,803.45 = 120,812.90 : x
  2. Step 2: Convert to fraction form
    331,202.30/496,803.45 = 120,812.90/x
  3. Step 3: Cross multiply
    331,202.30x = 496,803.45 × 120,812.90
  4. Step 4: Simplify right side
    331,202.30x = 60,020,265,524.51
  5. Step 5: Solve for x
    x = 60,020,265,524.51/331,202.30
  6. Step 6: Final answer
    x = 181,219.35

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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.