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Finding the Fourth Proportional to 368,800.20, 553,200.30 and 254,638.80

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Solution

The fourth proportional to 368,800.20, 553,200.30 and 254,638.80 is: 381,958.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,800.20 : 553,200.30 = 254,638.80 : x
  2. Step 2: Convert to fraction form
    368,800.20/553,200.30 = 254,638.80/x
  3. Step 3: Cross multiply
    368,800.20x = 553,200.30 × 254,638.80
  4. Step 4: Simplify right side
    368,800.20x = 140,866,260,551.64
  5. Step 5: Solve for x
    x = 140,866,260,551.64/368,800.20
  6. Step 6: Final answer
    x = 381,958.20

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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.