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Finding the Fourth Proportional to 395,345.32, 593,054.43 and 129,107.23

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Solution

The fourth proportional to 395,345.32, 593,054.43 and 129,107.23 is: 193,672.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,345.32 : 593,054.43 = 129,107.23 : x
  2. Step 2: Convert to fraction form
    395,345.32/593,054.43 = 129,107.23/x
  3. Step 3: Cross multiply
    395,345.32x = 593,054.43 × 129,107.23
  4. Step 4: Simplify right side
    395,345.32x = 76,567,614,696.53
  5. Step 5: Solve for x
    x = 76,567,614,696.53/395,345.32
  6. Step 6: Final answer
    x = 193,672.75

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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.