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Finding the Fourth Proportional to 199,855.20, 299,126.70 and 155,240.40

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Solution

The fourth proportional to 199,855.20, 299,126.70 and 155,240.40 is: 232,350.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,855.20 : 299,126.70 = 155,240.40 : x
  2. Step 2: Convert to fraction form
    199,855.20/299,126.70 = 155,240.40/x
  3. Step 3: Cross multiply
    199,855.20x = 299,126.70 × 155,240.40
  4. Step 4: Simplify right side
    199,855.20x = 46,436,548,558.68
  5. Step 5: Solve for x
    x = 46,436,548,558.68/199,855.20
  6. Step 6: Final answer
    x = 232,350.96

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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.