Home / 319,629.60-479,738.88-161,968.32

Finding the Fourth Proportional to 319,629.60, 479,738.88 and 161,968.32

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Solution

The fourth proportional to 319,629.60, 479,738.88 and 161,968.32 is: 243,101.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,629.60 : 479,738.88 = 161,968.32 : x
  2. Step 2: Convert to fraction form
    319,629.60/479,738.88 = 161,968.32/x
  3. Step 3: Cross multiply
    319,629.60x = 479,738.88 × 161,968.32
  4. Step 4: Simplify right side
    319,629.60x = 77,702,500,432.28
  5. Step 5: Solve for x
    x = 77,702,500,432.28/319,629.60
  6. Step 6: Final answer
    x = 243,101.70

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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.