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Finding the Fourth Proportional to 235,915.20, 331,214.40 and 235,915.20

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Solution

The fourth proportional to 235,915.20, 331,214.40 and 235,915.20 is: 331,214.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,915.20 : 331,214.40 = 235,915.20 : x
  2. Step 2: Convert to fraction form
    235,915.20/331,214.40 = 235,915.20/x
  3. Step 3: Cross multiply
    235,915.20x = 331,214.40 × 235,915.20
  4. Step 4: Simplify right side
    235,915.20x = 78,138,511,418.88
  5. Step 5: Solve for x
    x = 78,138,511,418.88/235,915.20
  6. Step 6: Final answer
    x = 331,214.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.