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Finding the Fourth Proportional to 367,495.20, 551,242.80 and 320,839.20

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Solution

The fourth proportional to 367,495.20, 551,242.80 and 320,839.20 is: 481,258.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,495.20 : 551,242.80 = 320,839.20 : x
  2. Step 2: Convert to fraction form
    367,495.20/551,242.80 = 320,839.20/x
  3. Step 3: Cross multiply
    367,495.20x = 551,242.80 × 320,839.20
  4. Step 4: Simplify right side
    367,495.20x = 176,860,298,957.76
  5. Step 5: Solve for x
    x = 176,860,298,957.76/367,495.20
  6. Step 6: Final answer
    x = 481,258.80

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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.