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Finding the Fourth Proportional to 395,579.52, 593,393.92 and 129,368.32

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Solution

The fourth proportional to 395,579.52, 593,393.92 and 129,368.32 is: 194,060.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,579.52 : 593,393.92 = 129,368.32 : x
  2. Step 2: Convert to fraction form
    395,579.52/593,393.92 = 129,368.32/x
  3. Step 3: Cross multiply
    395,579.52x = 593,393.92 × 129,368.32
  4. Step 4: Simplify right side
    395,579.52x = 76,766,374,528.61
  5. Step 5: Solve for x
    x = 76,766,374,528.61/395,579.52
  6. Step 6: Final answer
    x = 194,060.54

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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.