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Finding the Fourth Proportional to 304,311.80, 456,078.90 and 221,108.60

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Solution

The fourth proportional to 304,311.80, 456,078.90 and 221,108.60 is: 331,380.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,311.80 : 456,078.90 = 221,108.60 : x
  2. Step 2: Convert to fraction form
    304,311.80/456,078.90 = 221,108.60/x
  3. Step 3: Cross multiply
    304,311.80x = 456,078.90 × 221,108.60
  4. Step 4: Simplify right side
    304,311.80x = 100,842,967,068.54
  5. Step 5: Solve for x
    x = 100,842,967,068.54/304,311.80
  6. Step 6: Final answer
    x = 331,380.40

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1.5x scale

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.