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Finding the Fourth Proportional to 354,266.60, 531,514.66 and 212,089.64

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Solution

The fourth proportional to 354,266.60, 531,514.66 and 212,089.64 is: 318,203.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,266.60 : 531,514.66 = 212,089.64 : x
  2. Step 2: Convert to fraction form
    354,266.60/531,514.66 = 212,089.64/x
  3. Step 3: Cross multiply
    354,266.60x = 531,514.66 × 212,089.64
  4. Step 4: Simplify right side
    354,266.60x = 112,728,753,692.69
  5. Step 5: Solve for x
    x = 112,728,753,692.69/354,266.60
  6. Step 6: Final answer
    x = 318,203.16

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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.