Home / 394,780.08-592,108.26-128,538.80

Finding the Fourth Proportional to 394,780.08, 592,108.26 and 128,538.80

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Solution

The fourth proportional to 394,780.08, 592,108.26 and 128,538.80 is: 192,788.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,780.08 : 592,108.26 = 128,538.80 : x
  2. Step 2: Convert to fraction form
    394,780.08/592,108.26 = 128,538.80/x
  3. Step 3: Cross multiply
    394,780.08x = 592,108.26 × 128,538.80
  4. Step 4: Simplify right side
    394,780.08x = 76,108,882,249.95
  5. Step 5: Solve for x
    x = 76,108,882,249.95/394,780.08
  6. Step 6: Final answer
    x = 192,788.05

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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.