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Finding the Fourth Proportional to 307,217.25, 460,903.64 and 85,601.25

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Solution

The fourth proportional to 307,217.25, 460,903.64 and 85,601.25 is: 128,423.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,217.25 : 460,903.64 = 85,601.25 : x
  2. Step 2: Convert to fraction form
    307,217.25/460,903.64 = 85,601.25/x
  3. Step 3: Cross multiply
    307,217.25x = 460,903.64 × 85,601.25
  4. Step 4: Simplify right side
    307,217.25x = 39,453,927,285.54
  5. Step 5: Solve for x
    x = 39,453,927,285.54/307,217.25
  6. Step 6: Final answer
    x = 128,423.54

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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.