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Finding the Fourth Proportional to 319,783.75, 479,631.88 and 95,178.85

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Solution

The fourth proportional to 319,783.75, 479,631.88 and 95,178.85 is: 142,755.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,783.75 : 479,631.88 = 95,178.85 : x
  2. Step 2: Convert to fraction form
    319,783.75/479,631.88 = 95,178.85/x
  3. Step 3: Cross multiply
    319,783.75x = 479,631.88 × 95,178.85
  4. Step 4: Simplify right side
    319,783.75x = 45,650,809,324.71
  5. Step 5: Solve for x
    x = 45,650,809,324.71/319,783.75
  6. Step 6: Final answer
    x = 142,755.25

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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.