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Finding the Fourth Proportional to 319,348.25, 478,480.11 and 192,722.43

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Solution

The fourth proportional to 319,348.25, 478,480.11 and 192,722.43 is: 288,756.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,348.25 : 478,480.11 = 192,722.43 : x
  2. Step 2: Convert to fraction form
    319,348.25/478,480.11 = 192,722.43/x
  3. Step 3: Cross multiply
    319,348.25x = 478,480.11 × 192,722.43
  4. Step 4: Simplify right side
    319,348.25x = 92,213,849,505.87
  5. Step 5: Solve for x
    x = 92,213,849,505.87/319,348.25
  6. Step 6: Final answer
    x = 288,756.40

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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.