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Finding the Fourth Proportional to 300,607.64, 451,215.32 and 266,636.20

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Solution

The fourth proportional to 300,607.64, 451,215.32 and 266,636.20 is: 400,223.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,607.64 : 451,215.32 = 266,636.20 : x
  2. Step 2: Convert to fraction form
    300,607.64/451,215.32 = 266,636.20/x
  3. Step 3: Cross multiply
    300,607.64x = 451,215.32 × 266,636.20
  4. Step 4: Simplify right side
    300,607.64x = 120,310,338,306.58
  5. Step 5: Solve for x
    x = 120,310,338,306.58/300,607.64
  6. Step 6: Final answer
    x = 400,223.82

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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.