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Finding the Fourth Proportional to 307,227.64, 460,919.22 and 85,611.64

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Solution

The fourth proportional to 307,227.64, 460,919.22 and 85,611.64 is: 128,439.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,227.64 : 460,919.22 = 85,611.64 : x
  2. Step 2: Convert to fraction form
    307,227.64/460,919.22 = 85,611.64/x
  3. Step 3: Cross multiply
    307,227.64x = 460,919.22 × 85,611.64
  4. Step 4: Simplify right side
    307,227.64x = 39,460,050,331.72
  5. Step 5: Solve for x
    x = 39,460,050,331.72/307,227.64
  6. Step 6: Final answer
    x = 128,439.13

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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.