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Finding the Fourth Proportional to 199,995.20, 299,992.80 and 164,974.40

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Solution

The fourth proportional to 199,995.20, 299,992.80 and 164,974.40 is: 247,461.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,995.20 : 299,992.80 = 164,974.40 : x
  2. Step 2: Convert to fraction form
    199,995.20/299,992.80 = 164,974.40/x
  3. Step 3: Cross multiply
    199,995.20x = 299,992.80 × 164,974.40
  4. Step 4: Simplify right side
    199,995.20x = 49,491,132,184.32
  5. Step 5: Solve for x
    x = 49,491,132,184.32/199,995.20
  6. Step 6: Final answer
    x = 247,461.60

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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.