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Finding the Fourth Proportional to 396,703.64, 595,054.16 and 143,983.79

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Solution

The fourth proportional to 396,703.64, 595,054.16 and 143,983.79 is: 215,975.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,703.64 : 595,054.16 = 143,983.79 : x
  2. Step 2: Convert to fraction form
    396,703.64/595,054.16 = 143,983.79/x
  3. Step 3: Cross multiply
    396,703.64x = 595,054.16 × 143,983.79
  4. Step 4: Simplify right side
    396,703.64x = 85,678,154,339.74
  5. Step 5: Solve for x
    x = 85,678,154,339.74/396,703.64
  6. Step 6: Final answer
    x = 215,975.22

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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.