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Finding the Fourth Proportional to 319,694.85, 479,365.70 and 201,112.47

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Solution

The fourth proportional to 319,694.85, 479,365.70 and 201,112.47 is: 301,557.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,694.85 : 479,365.70 = 201,112.47 : x
  2. Step 2: Convert to fraction form
    319,694.85/479,365.70 = 201,112.47/x
  3. Step 3: Cross multiply
    319,694.85x = 479,365.70 × 201,112.47
  4. Step 4: Simplify right side
    319,694.85x = 96,406,418,954.72
  5. Step 5: Solve for x
    x = 96,406,418,954.72/319,694.85
  6. Step 6: Final answer
    x = 301,557.62

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1.5x scale

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.