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Finding the Fourth Proportional to 395,425.80, 593,138.70 and 300,947.40

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Solution

The fourth proportional to 395,425.80, 593,138.70 and 300,947.40 is: 451,421.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,425.80 : 593,138.70 = 300,947.40 : x
  2. Step 2: Convert to fraction form
    395,425.80/593,138.70 = 300,947.40/x
  3. Step 3: Cross multiply
    395,425.80x = 593,138.70 × 300,947.40
  4. Step 4: Simplify right side
    395,425.80x = 178,503,549,604.38
  5. Step 5: Solve for x
    x = 178,503,549,604.38/395,425.80
  6. Step 6: Final answer
    x = 451,421.10

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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.