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Finding the Fourth Proportional to 199,257.40, 299,231.70 and 140,505.40

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Solution

The fourth proportional to 199,257.40, 299,231.70 and 140,505.40 is: 211,001.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,257.40 : 299,231.70 = 140,505.40 : x
  2. Step 2: Convert to fraction form
    199,257.40/299,231.70 = 140,505.40/x
  3. Step 3: Cross multiply
    199,257.40x = 299,231.70 × 140,505.40
  4. Step 4: Simplify right side
    199,257.40x = 42,043,669,701.18
  5. Step 5: Solve for x
    x = 42,043,669,701.18/199,257.40
  6. Step 6: Final answer
    x = 211,001.80

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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.