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Finding the Fourth Proportional to 300,121.04, 449,681.79 and 211,187.70

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Solution

The fourth proportional to 300,121.04, 449,681.79 and 211,187.70 is: 316,429.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,121.04 : 449,681.79 = 211,187.70 : x
  2. Step 2: Convert to fraction form
    300,121.04/449,681.79 = 211,187.70/x
  3. Step 3: Cross multiply
    300,121.04x = 449,681.79 × 211,187.70
  4. Step 4: Simplify right side
    300,121.04x = 94,967,262,961.98
  5. Step 5: Solve for x
    x = 94,967,262,961.98/300,121.04
  6. Step 6: Final answer
    x = 316,429.87

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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.