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Finding the Fourth Proportional to 394,808.32, 544,833.84 and 213,520.40

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Solution

The fourth proportional to 394,808.32, 544,833.84 and 213,520.40 is: 294,657.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,808.32 : 544,833.84 = 213,520.40 : x
  2. Step 2: Convert to fraction form
    394,808.32/544,833.84 = 213,520.40/x
  3. Step 3: Cross multiply
    394,808.32x = 544,833.84 × 213,520.40
  4. Step 4: Simplify right side
    394,808.32x = 116,333,139,450.34
  5. Step 5: Solve for x
    x = 116,333,139,450.34/394,808.32
  6. Step 6: Final answer
    x = 294,657.26

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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.