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Finding the Fourth Proportional to 367,975.80, 551,963.70 and 345,814.20

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Solution

The fourth proportional to 367,975.80, 551,963.70 and 345,814.20 is: 518,721.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,975.80 : 551,963.70 = 345,814.20 : x
  2. Step 2: Convert to fraction form
    367,975.80/551,963.70 = 345,814.20/x
  3. Step 3: Cross multiply
    367,975.80x = 551,963.70 × 345,814.20
  4. Step 4: Simplify right side
    367,975.80x = 190,876,885,344.54
  5. Step 5: Solve for x
    x = 190,876,885,344.54/367,975.80
  6. Step 6: Final answer
    x = 518,721.30

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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.