Home / 394,209.12-544,008.32-212,920.96

Finding the Fourth Proportional to 394,209.12, 544,008.32 and 212,920.96

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Solution

The fourth proportional to 394,209.12, 544,008.32 and 212,920.96 is: 293,830.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,209.12 : 544,008.32 = 212,920.96 : x
  2. Step 2: Convert to fraction form
    394,209.12/544,008.32 = 212,920.96/x
  3. Step 3: Cross multiply
    394,209.12x = 544,008.32 × 212,920.96
  4. Step 4: Simplify right side
    394,209.12x = 115,830,773,742.39
  5. Step 5: Solve for x
    x = 115,830,773,742.39/394,209.12
  6. Step 6: Final answer
    x = 293,830.78

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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.