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Finding the Fourth Proportional to 299,387.98, 449,153.74 and 99,710.09

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Solution

The fourth proportional to 299,387.98, 449,153.74 and 99,710.09 is: 149,589.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,387.98 : 449,153.74 = 99,710.09 : x
  2. Step 2: Convert to fraction form
    299,387.98/449,153.74 = 99,710.09/x
  3. Step 3: Cross multiply
    299,387.98x = 449,153.74 × 99,710.09
  4. Step 4: Simplify right side
    299,387.98x = 44,785,159,402.43
  5. Step 5: Solve for x
    x = 44,785,159,402.43/299,387.98
  6. Step 6: Final answer
    x = 149,589.04

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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.