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Finding the Fourth Proportional to 384,778.26, 530,992.35 and 215,012.37

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Solution

The fourth proportional to 384,778.26, 530,992.35 and 215,012.37 is: 296,716.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,778.26 : 530,992.35 = 215,012.37 : x
  2. Step 2: Convert to fraction form
    384,778.26/530,992.35 = 215,012.37/x
  3. Step 3: Cross multiply
    384,778.26x = 530,992.35 × 215,012.37
  4. Step 4: Simplify right side
    384,778.26x = 114,169,923,625.37
  5. Step 5: Solve for x
    x = 114,169,923,625.37/384,778.26
  6. Step 6: Final answer
    x = 296,716.15

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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.