Home / 319,883.20-479,825.40-83,225.48

Finding the Fourth Proportional to 319,883.20, 479,825.40 and 83,225.48

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Solution

The fourth proportional to 319,883.20, 479,825.40 and 83,225.48 is: 124,838.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,883.20 : 479,825.40 = 83,225.48 : x
  2. Step 2: Convert to fraction form
    319,883.20/479,825.40 = 83,225.48/x
  3. Step 3: Cross multiply
    319,883.20x = 479,825.40 × 83,225.48
  4. Step 4: Simplify right side
    319,883.20x = 39,933,699,231.19
  5. Step 5: Solve for x
    x = 39,933,699,231.19/319,883.20
  6. Step 6: Final answer
    x = 124,838.38

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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.