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Finding the Fourth Proportional to 352,576.60, 528,087.30 and 212,090.20

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Solution

The fourth proportional to 352,576.60, 528,087.30 and 212,090.20 is: 317,667.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,576.60 : 528,087.30 = 212,090.20 : x
  2. Step 2: Convert to fraction form
    352,576.60/528,087.30 = 212,090.20/x
  3. Step 3: Cross multiply
    352,576.60x = 528,087.30 × 212,090.20
  4. Step 4: Simplify right side
    352,576.60x = 112,002,141,074.46
  5. Step 5: Solve for x
    x = 112,002,141,074.46/352,576.60
  6. Step 6: Final answer
    x = 317,667.54

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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.