Home / 385,490.22-531,975.24-215,723.94

Finding the Fourth Proportional to 385,490.22, 531,975.24 and 215,723.94

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Solution

The fourth proportional to 385,490.22, 531,975.24 and 215,723.94 is: 297,698.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,490.22 : 531,975.24 = 215,723.94 : x
  2. Step 2: Convert to fraction form
    385,490.22/531,975.24 = 215,723.94/x
  3. Step 3: Cross multiply
    385,490.22x = 531,975.24 × 215,723.94
  4. Step 4: Simplify right side
    385,490.22x = 114,759,794,755.25
  5. Step 5: Solve for x
    x = 114,759,794,755.25/385,490.22
  6. Step 6: Final answer
    x = 297,698.33

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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.