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Finding the Fourth Proportional to 212,188.21, 316,628.39 and 193,325.33

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Solution

The fourth proportional to 212,188.21, 316,628.39 and 193,325.33 is: 288,481.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,188.21 : 316,628.39 = 193,325.33 : x
  2. Step 2: Convert to fraction form
    212,188.21/316,628.39 = 193,325.33/x
  3. Step 3: Cross multiply
    212,188.21x = 316,628.39 × 193,325.33
  4. Step 4: Simplify right side
    212,188.21x = 61,212,289,259.00
  5. Step 5: Solve for x
    x = 61,212,289,259.00/212,188.21
  6. Step 6: Final answer
    x = 288,481.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.