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Finding the Fourth Proportional to 394,937.84, 545,013.03 and 213,649.72

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Solution

The fourth proportional to 394,937.84, 545,013.03 and 213,649.72 is: 294,835.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,937.84 : 545,013.03 = 213,649.72 : x
  2. Step 2: Convert to fraction form
    394,937.84/545,013.03 = 213,649.72/x
  3. Step 3: Cross multiply
    394,937.84x = 545,013.03 × 213,649.72
  4. Step 4: Simplify right side
    394,937.84x = 116,441,880,860.04
  5. Step 5: Solve for x
    x = 116,441,880,860.04/394,937.84
  6. Step 6: Final answer
    x = 294,835.97

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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.