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Finding the Fourth Proportional to 500,179.98, 690,183.99 and 285,307.23

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Solution

The fourth proportional to 500,179.98, 690,183.99 and 285,307.23 is: 393,687.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,179.98 : 690,183.99 = 285,307.23 : x
  2. Step 2: Convert to fraction form
    500,179.98/690,183.99 = 285,307.23/x
  3. Step 3: Cross multiply
    500,179.98x = 690,183.99 × 285,307.23
  4. Step 4: Simplify right side
    500,179.98x = 196,914,482,377.25
  5. Step 5: Solve for x
    x = 196,914,482,377.25/500,179.98
  6. Step 6: Final answer
    x = 393,687.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.