Home / 394,984.12-592,415.34-128,743.96

Finding the Fourth Proportional to 394,984.12, 592,415.34 and 128,743.96

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Solution

The fourth proportional to 394,984.12, 592,415.34 and 128,743.96 is: 193,096.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,984.12 : 592,415.34 = 128,743.96 : x
  2. Step 2: Convert to fraction form
    394,984.12/592,415.34 = 128,743.96/x
  3. Step 3: Cross multiply
    394,984.12x = 592,415.34 × 128,743.96
  4. Step 4: Simplify right side
    394,984.12x = 76,269,896,836.35
  5. Step 5: Solve for x
    x = 76,269,896,836.35/394,984.12
  6. Step 6: Final answer
    x = 193,096.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.