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Finding the Fourth Proportional to 307,238.20, 460,935.02 and 85,622.20

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Solution

The fourth proportional to 307,238.20, 460,935.02 and 85,622.20 is: 128,454.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,238.20 : 460,935.02 = 85,622.20 : x
  2. Step 2: Convert to fraction form
    307,238.20/460,935.02 = 85,622.20/x
  3. Step 3: Cross multiply
    307,238.20x = 460,935.02 × 85,622.20
  4. Step 4: Simplify right side
    307,238.20x = 39,466,270,469.44
  5. Step 5: Solve for x
    x = 39,466,270,469.44/307,238.20
  6. Step 6: Final answer
    x = 128,454.96

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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.