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Finding the Fourth Proportional to 367,365.80, 551,372.70 and 217,418.60

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Solution

The fourth proportional to 367,365.80, 551,372.70 and 217,418.60 is: 326,319.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,365.80 : 551,372.70 = 217,418.60 : x
  2. Step 2: Convert to fraction form
    367,365.80/551,372.70 = 217,418.60/x
  3. Step 3: Cross multiply
    367,365.80x = 551,372.70 × 217,418.60
  4. Step 4: Simplify right side
    367,365.80x = 119,878,680,512.22
  5. Step 5: Solve for x
    x = 119,878,680,512.22/367,365.80
  6. Step 6: Final answer
    x = 326,319.65

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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.