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Finding the Fourth Proportional to 212,214.28, 318,239.60 and 93,820.64

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Solution

The fourth proportional to 212,214.28, 318,239.60 and 93,820.64 is: 140,694.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,214.28 : 318,239.60 = 93,820.64 : x
  2. Step 2: Convert to fraction form
    212,214.28/318,239.60 = 93,820.64/x
  3. Step 3: Cross multiply
    212,214.28x = 318,239.60 × 93,820.64
  4. Step 4: Simplify right side
    212,214.28x = 29,857,442,945.34
  5. Step 5: Solve for x
    x = 29,857,442,945.34/212,214.28
  6. Step 6: Final answer
    x = 140,694.79

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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.