Home / 319,947.86-479,625.26-120,400.58

Finding the Fourth Proportional to 319,947.86, 479,625.26 and 120,400.58

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Solution

The fourth proportional to 319,947.86, 479,625.26 and 120,400.58 is: 180,489.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,947.86 : 479,625.26 = 120,400.58 : x
  2. Step 2: Convert to fraction form
    319,947.86/479,625.26 = 120,400.58/x
  3. Step 3: Cross multiply
    319,947.86x = 479,625.26 × 120,400.58
  4. Step 4: Simplify right side
    319,947.86x = 57,747,156,486.52
  5. Step 5: Solve for x
    x = 57,747,156,486.52/319,947.86
  6. Step 6: Final answer
    x = 180,489.28

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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.