Home / 394,877.28-592,315.44-128,637.36

Finding the Fourth Proportional to 394,877.28, 592,315.44 and 128,637.36

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Solution

The fourth proportional to 394,877.28, 592,315.44 and 128,637.36 is: 192,955.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,877.28 : 592,315.44 = 128,637.36 : x
  2. Step 2: Convert to fraction form
    394,877.28/592,315.44 = 128,637.36/x
  3. Step 3: Cross multiply
    394,877.28x = 592,315.44 × 128,637.36
  4. Step 4: Simplify right side
    394,877.28x = 76,193,894,488.84
  5. Step 5: Solve for x
    x = 76,193,894,488.84/394,877.28
  6. Step 6: Final answer
    x = 192,955.88

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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.