Home / 394,871.28-592,306.44-128,631.36

Finding the Fourth Proportional to 394,871.28, 592,306.44 and 128,631.36

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Solution

The fourth proportional to 394,871.28, 592,306.44 and 128,631.36 is: 192,946.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,871.28 : 592,306.44 = 128,631.36 : x
  2. Step 2: Convert to fraction form
    394,871.28/592,306.44 = 128,631.36/x
  3. Step 3: Cross multiply
    394,871.28x = 592,306.44 × 128,631.36
  4. Step 4: Simplify right side
    394,871.28x = 76,189,182,913.96
  5. Step 5: Solve for x
    x = 76,189,182,913.96/394,871.28
  6. Step 6: Final answer
    x = 192,946.88

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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.