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Finding the Fourth Proportional to 368,809.20, 553,213.80 and 329,410.80

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Solution

The fourth proportional to 368,809.20, 553,213.80 and 329,410.80 is: 494,116.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,809.20 : 553,213.80 = 329,410.80 : x
  2. Step 2: Convert to fraction form
    368,809.20/553,213.80 = 329,410.80/x
  3. Step 3: Cross multiply
    368,809.20x = 553,213.80 × 329,410.80
  4. Step 4: Simplify right side
    368,809.20x = 182,234,600,429.04
  5. Step 5: Solve for x
    x = 182,234,600,429.04/368,809.20
  6. Step 6: Final answer
    x = 494,116.20

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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.