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Finding the Fourth Proportional to 395,620.29, 593,012.07 and 129,309.30

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Solution

The fourth proportional to 395,620.29, 593,012.07 and 129,309.30 is: 193,827.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,620.29 : 593,012.07 = 129,309.30 : x
  2. Step 2: Convert to fraction form
    395,620.29/593,012.07 = 129,309.30/x
  3. Step 3: Cross multiply
    395,620.29x = 593,012.07 × 129,309.30
  4. Step 4: Simplify right side
    395,620.29x = 76,681,975,663.25
  5. Step 5: Solve for x
    x = 76,681,975,663.25/395,620.29
  6. Step 6: Final answer
    x = 193,827.21

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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.