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Finding the Fourth Proportional to 203,172.96, 304,808.10 and 84,778.44

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Solution

The fourth proportional to 203,172.96, 304,808.10 and 84,778.44 is: 127,187.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,172.96 : 304,808.10 = 84,778.44 : x
  2. Step 2: Convert to fraction form
    203,172.96/304,808.10 = 84,778.44/x
  3. Step 3: Cross multiply
    203,172.96x = 304,808.10 × 84,778.44
  4. Step 4: Simplify right side
    203,172.96x = 25,841,155,217.36
  5. Step 5: Solve for x
    x = 25,841,155,217.36/203,172.96
  6. Step 6: Final answer
    x = 127,187.96

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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.