Home / 331,330,997.80-496,996,496.70-280,312,661.80

Finding the Fourth Proportional to 331,330,997.80, 496,996,496.70 and 280,312,661.80

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Solution

The fourth proportional to 331,330,997.80, 496,996,496.70 and 280,312,661.80 is: 420,468,992.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,330,997.80 : 496,996,496.70 = 280,312,661.80 : x
  2. Step 2: Convert to fraction form
    331,330,997.80/496,996,496.70 = 280,312,661.80/x
  3. Step 3: Cross multiply
    331,330,997.80x = 496,996,496.70 × 280,312,661.80
  4. Step 4: Simplify right side
    331,330,997.80x = 139,314,410,895,251,920
  5. Step 5: Solve for x
    x = 139,314,410,895,251,920/331,330,997.80
  6. Step 6: Final answer
    x = 420,468,992.70

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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.