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Finding the Fourth Proportional to 289,851.92, 399,919.90 and 167,314.30

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Solution

The fourth proportional to 289,851.92, 399,919.90 and 167,314.30 is: 230,850.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,851.92 : 399,919.90 = 167,314.30 : x
  2. Step 2: Convert to fraction form
    289,851.92/399,919.90 = 167,314.30/x
  3. Step 3: Cross multiply
    289,851.92x = 399,919.90 × 167,314.30
  4. Step 4: Simplify right side
    289,851.92x = 66,912,318,124.57
  5. Step 5: Solve for x
    x = 66,912,318,124.57/289,851.92
  6. Step 6: Final answer
    x = 230,850.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.