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Finding the Fourth Proportional to 368,851.20, 553,276.80 and 275,539.20

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Solution

The fourth proportional to 368,851.20, 553,276.80 and 275,539.20 is: 413,308.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,851.20 : 553,276.80 = 275,539.20 : x
  2. Step 2: Convert to fraction form
    368,851.20/553,276.80 = 275,539.20/x
  3. Step 3: Cross multiply
    368,851.20x = 553,276.80 × 275,539.20
  4. Step 4: Simplify right side
    368,851.20x = 152,449,446,850.56
  5. Step 5: Solve for x
    x = 152,449,446,850.56/368,851.20
  6. Step 6: Final answer
    x = 413,308.80

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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.