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Finding the Fourth Proportional to 395,702.28, 593,626.32 and 129,477.72

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Solution

The fourth proportional to 395,702.28, 593,626.32 and 129,477.72 is: 194,240.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,702.28 : 593,626.32 = 129,477.72 : x
  2. Step 2: Convert to fraction form
    395,702.28/593,626.32 = 129,477.72/x
  3. Step 3: Cross multiply
    395,702.28x = 593,626.32 × 129,477.72
  4. Step 4: Simplify right side
    395,702.28x = 76,861,382,445.59
  5. Step 5: Solve for x
    x = 76,861,382,445.59/395,702.28
  6. Step 6: Final answer
    x = 194,240.43

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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.