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Finding the Fourth Proportional to 319,772.43, 479,684.07 and 186,666.12

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Solution

The fourth proportional to 319,772.43, 479,684.07 and 186,666.12 is: 280,014.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,772.43 : 479,684.07 = 186,666.12 : x
  2. Step 2: Convert to fraction form
    319,772.43/479,684.07 = 186,666.12/x
  3. Step 3: Cross multiply
    319,772.43x = 479,684.07 × 186,666.12
  4. Step 4: Simplify right side
    319,772.43x = 89,540,764,172.71
  5. Step 5: Solve for x
    x = 89,540,764,172.71/319,772.43
  6. Step 6: Final answer
    x = 280,014.02

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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.