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Finding the Fourth Proportional to 331,311.40, 496,967.10 and 289,839.40

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Solution

The fourth proportional to 331,311.40, 496,967.10 and 289,839.40 is: 434,759.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,311.40 : 496,967.10 = 289,839.40 : x
  2. Step 2: Convert to fraction form
    331,311.40/496,967.10 = 289,839.40/x
  3. Step 3: Cross multiply
    331,311.40x = 496,967.10 × 289,839.40
  4. Step 4: Simplify right side
    331,311.40x = 144,040,646,083.74
  5. Step 5: Solve for x
    x = 144,040,646,083.74/331,311.40
  6. Step 6: Final answer
    x = 434,759.10

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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.