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Finding the Fourth Proportional to 299,658.40, 449,314.80 and 112,688.80

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Solution

The fourth proportional to 299,658.40, 449,314.80 and 112,688.80 is: 168,968.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,658.40 : 449,314.80 = 112,688.80 : x
  2. Step 2: Convert to fraction form
    299,658.40/449,314.80 = 112,688.80/x
  3. Step 3: Cross multiply
    299,658.40x = 449,314.80 × 112,688.80
  4. Step 4: Simplify right side
    299,658.40x = 50,632,745,634.24
  5. Step 5: Solve for x
    x = 50,632,745,634.24/299,658.40
  6. Step 6: Final answer
    x = 168,968.22

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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.