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Finding the Fourth Proportional to 307,553.55, 461,330.33 and 85,937.55

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Solution

The fourth proportional to 307,553.55, 461,330.33 and 85,937.55 is: 128,906.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,553.55 : 461,330.33 = 85,937.55 : x
  2. Step 2: Convert to fraction form
    307,553.55/461,330.33 = 85,937.55/x
  3. Step 3: Cross multiply
    307,553.55x = 461,330.33 × 85,937.55
  4. Step 4: Simplify right side
    307,553.55x = 39,645,597,871.20
  5. Step 5: Solve for x
    x = 39,645,597,871.20/307,553.55
  6. Step 6: Final answer
    x = 128,906.33

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Similar ratio
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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.