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Finding the Fourth Proportional to 199,410.60, 299,115.90 and 115,429.80

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Solution

The fourth proportional to 199,410.60, 299,115.90 and 115,429.80 is: 173,144.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,410.60 : 299,115.90 = 115,429.80 : x
  2. Step 2: Convert to fraction form
    199,410.60/299,115.90 = 115,429.80/x
  3. Step 3: Cross multiply
    199,410.60x = 299,115.90 × 115,429.80
  4. Step 4: Simplify right side
    199,410.60x = 34,526,888,513.82
  5. Step 5: Solve for x
    x = 34,526,888,513.82/199,410.60
  6. Step 6: Final answer
    x = 173,144.70

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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.