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Finding the Fourth Proportional to 300,118.79, 449,678.41 and 211,185.45

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Solution

The fourth proportional to 300,118.79, 449,678.41 and 211,185.45 is: 316,426.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,118.79 : 449,678.41 = 211,185.45 : x
  2. Step 2: Convert to fraction form
    300,118.79/449,678.41 = 211,185.45/x
  3. Step 3: Cross multiply
    300,118.79x = 449,678.41 × 211,185.45
  4. Step 4: Simplify right side
    300,118.79x = 94,965,537,371.13
  5. Step 5: Solve for x
    x = 94,965,537,371.13/300,118.79
  6. Step 6: Final answer
    x = 316,426.50

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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.