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Finding the Fourth Proportional to 319,630.60, 479,964.30 and 231,502.60

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Solution

The fourth proportional to 319,630.60, 479,964.30 and 231,502.60 is: 347,629.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,630.60 : 479,964.30 = 231,502.60 : x
  2. Step 2: Convert to fraction form
    319,630.60/479,964.30 = 231,502.60/x
  3. Step 3: Cross multiply
    319,630.60x = 479,964.30 × 231,502.60
  4. Step 4: Simplify right side
    319,630.60x = 111,112,983,357.18
  5. Step 5: Solve for x
    x = 111,112,983,357.18/319,630.60
  6. Step 6: Final answer
    x = 347,629.37

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1.5x scale

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.