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Finding the Fourth Proportional to 207,725.70, 311,661.45 and 89,433.30

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Solution

The fourth proportional to 207,725.70, 311,661.45 and 89,433.30 is: 134,181.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,725.70 : 311,661.45 = 89,433.30 : x
  2. Step 2: Convert to fraction form
    207,725.70/311,661.45 = 89,433.30/x
  3. Step 3: Cross multiply
    207,725.70x = 311,661.45 × 89,433.30
  4. Step 4: Simplify right side
    207,725.70x = 27,872,911,956.29
  5. Step 5: Solve for x
    x = 27,872,911,956.29/207,725.70
  6. Step 6: Final answer
    x = 134,181.34

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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.