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Finding the Fourth Proportional to 384,633.99, 530,768.36 and 212,550.33

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Solution

The fourth proportional to 384,633.99, 530,768.36 and 212,550.33 is: 293,304.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,633.99 : 530,768.36 = 212,550.33 : x
  2. Step 2: Convert to fraction form
    384,633.99/530,768.36 = 212,550.33/x
  3. Step 3: Cross multiply
    384,633.99x = 530,768.36 × 212,550.33
  4. Step 4: Simplify right side
    384,633.99x = 112,814,988,711.05
  5. Step 5: Solve for x
    x = 112,814,988,711.05/384,633.99
  6. Step 6: Final answer
    x = 293,304.78

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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.